Coauthorship graph organized by Michael Overton at the LNT60 conference, Oxford, August 2015.

Books are listed in
green.

Additional essays can be found
here.

For one-line summaries of each publication,
click
here.

**Not yet appeared**

*Rectangular eigenvalue problems*, with B. Hashemi and
Y. Nakatsukasa.
Advances in Computational Mathematics, submitted.

*AAA-least squares rational approximation and
solution of Laplace problems*, with S. Costa.
Proceedings of the 8ECM, to appear.

**2022**

*Exactness of quadrature formulas*.
SIAM Rev., 64 (2022), 132--150.

*Lightning Stokes solver*, with P. D. Brubeck.
SIAM J. Sci. Comp., 44 (2022), A1205-A1226.

**2021**

*Reciprocal-log approximation and planar PDE
solvers*,
with Y. Nakatsukasa.
SIAM J. Numer. Anal., 59 (2021), 2801-2822.

*Log-lightning computation of capacity and Green's function*,
with P. Baddoo. Maple Trans., 1 (2021), 5:1-5:13.
(video abstract)

*Vandermonde with Arnoldi*,
with P. D. Brubeck and Y. Nakatsukasa.
SIAM Rev., 63 (2021), 405-415.

*Exponential node clustering at singularities for rational
approximation, quadrature, and PDEs*,
with Y. Nakatsukasa and J. A. C. Weideman.
Numer. Math., 147 (2021), 227-254.

**2020**

*An algorithm for real and complex rational minimax approximation*,
with Y. Nakatsukasa. SIAM J. Sci. Comp., 42 (2020), A3157-A3179.

*Numerical conformal mapping with rational functions*.
Comp. Meth. Funct. Th., 20 (2020), 369-387.

*Eight perspectives on an exponentially ill-conditioned ODE*.
SIAM Rev., 62 (2020), 439-462.

*Quantifying the ill-conditioning of analytic continuation*.
BIT Numer. Math., 60 (2020), 901-915.

**2019**

*Approximation Theory and Approximation Practice,
extended edition*.
SIAM, 2019.

*Solving Laplace problems with corner singularities via
rational functions*, with A. Gopal.
SIAM J. Numer. Anal., 57 (2019), 2074-2094.

*New Laplace and Helmholtz solvers*,
with A. Gopal.
Proc. Nat. Acad. Sci. USA, 116 (2019), 10223.

*Representation of conformal maps by rational functions*,
with A. Gopal.
Numer. Math., 142 (2019), 359-382.

*Smooth random functions, random ODEs, and Gaussian
processes*, with S. Filip and A. Javeed.
SIAM Rev., 61 (2019), 185-205.

**2018**

*The AAA algorithm for rational approximation*,
with Y. Nakatsukasa and O. Sète.
SIAM J. Sci. Comp., 40 (2018), A1494-A1522.

*Series solution of Laplace problems*.
ANZIAM J., 60 (2018), 1-26.

*Rational minimax approximation via adaptive
barycentric representations*,
with S.-I. Filip, Y. Nakatsukasa, and B. Beckermann.
SIAM J. Sci. Comp, 40 (2018), A2427-A2455.

*Rational approximation of x ^{n}*,
with Y. Nakatsukasa.
Proc. Amer. Math. Soc., 146 (2018), 5219-5224.

**2017**

*Exploring ODEs*,
with A. Birkisson and T. A. Driscoll.
SIAM, 2017.

*Block operators and spectral discretizations*,
with J. L. Aurentz.
SIAM Rev., 59 (2017), 423-446.

*Chopping a Chebyshev series*,
with J. L. Aurentz.
ACM Trans. Math. Softw., 43 (2017), 33.

*Trigonometric interpolation and quadrature in perturbed points*,
with A. P. Austin.
SIAM J. Numer. Anal., 55 (2017), 2113-2122.

*Cubature, approximation, and isotropy in the hypercube*.
SIAM Rev., 59 (2017), 469-491.

*Multivariate polynomial approximation in
the hypercube*.
Proc. AMS, 145 (2017), 4837-4844.

*Chebfun in three dimensions*,
with B. Hashemi.
SIAM J. Sci. Comp., 39 (2017), C341-C363.

**2016**

*Euler-Maclaurin and Gregory interpolants*,
with M. Javed. Numer. Math. 132 (2016), 201-216.

*Inverse Yogiisms*.
Notices AMS, 63 (2016).

**2015**

*Computing eigenvalues of real symmetric matrices with rational
filters in real arithmetic*, with A. P. Austin.
SIAM J. Sci. Comp., 37 (2015), A1365-A1387.

*Mathematics of the Faraday Cage*,
with S. J. Chapman and D. P. Hewett.
SIAM Rev., 57 (2015), 398-417.

*Extension of Chebfun to periodic functions*,
with G. B. Wright, M. Javed, and H. Montanelli.
SIAM J. Sci. Comp, 37 (2015), C554-C573.

*Continuous analogues of matrix factorizations*,
with A. Townsend. Proc. Roy. Soc. A, 471 (2015), 20140585.

*Computing numerically with functions instead of numbers*.
Comm. ACM, 58 (2015), 91-97.

**2014**

*A trapezoidal rule error bound unifying the
Euler-Maclaurin formula and geometric convergence
for periodic functions*, with M. Javed.
Proc. R. Soc. A, 470 (2014), xx-xx.

*Chebfun Guide*,
with T. A. Driscoll and N. Hale.
Pafnuty Press, 2014.

*The exponentially convergent trapezoidal rule*,
with J. A. C. Weideman.
SIAM Rev., 56 (2014), 385-458.

*Numerical algorithms based on analytic function
values at roots of unity*, with
A. P. Austin and P. Kravanja.
SIAM J. Numer. Anal., 52 (2014), 1795-1821.

**2013**

*Gaussian elimination as an iterative algorithm*,
with A. Townsend.
SIAM News, 2013.

*An extension of Chebfun to two dimensions*,
with A. Townsend. SIAM J. Sci. Comp., 35 (2013), C495-C518.

*Approximation Theory and Approximation
Practice*,
SIAM, 2013.

*Robust Padé approximation via SVD*,
with P. Gonnet and S. Güttel.
SIAM Rev., 55 (2013), 101-117.

**2012**

*Chebfun and numerical quadrature*,
with N. Hale.
Sci. China Math., 55 (2012), 1749-1760.

*Stability of barycentric interpolation formulas for
extrapolation*,
with M. Webb and P. Gonnet.
SIAM J. Sci. Comp., 34 (2012), A3009-A3015.

**2011**

*A sinc function analogue of Chebfun*,
with M. Richardson.
SIAM J. Sci. Comp., 33 (2011), 2519-2535.

*Robust rational interpolation and least-squares*,
with P. Gonnet and R. Pachón.
Elect. Trans. Numer. Anal., 38 (2011), 146-167.

*Trefethen's Index Cards:
Forty Years of Notes
about People, Words and Mathematics*.
World Scientific Publishing, 2011.

*Six myths of polynomial interpolation and quadrature*.
Maths. Today, 47 (2011), 184-188.
(Persian translation)

*A robust implementation of the
Carathéodory-Fejér method for rational approximation*,
with J. Van Deun.
BIT Numer. Math., 51 (2011), 1039-1050.

*Ten digit problems*.
In D. Schleicher and M. Lackmann,
eds., *Invitation to Mathematics:
From Competitions to Research,* Springer, 2011.

*Impossibility of fast stable approximation
of analytic functions from equispaced samples*,
with R. B. Platte and A. B. J. Kuijlaars.
SIAM Rev., 53 (2011), 308-318.

**2010**

*Four bugs on a rectangle*,
with S. J. Chapman and J. Lottes.
Proc. Roy. Soc. A, 467 (2010), 881-896.

*Piecewise-smooth chebfuns*,
with R. Pachón and R. B. Platte.
IMA J. Numer. Anal., 30 (2010), 898-916.

*Householder triangularization of a quasimatrix*.
IMA J. Numer. Anal., 30 (2010), 887-897.

*Chebfun: A new kind of numerical computing*,
with R. B. Platte. In Progress in Industrial Mathematics
at ECMI 2008, Springer, 2010.

**2009**

*Barycentric-Remez algorithms for best polynomial
approximation in the chebfun system*,
with R. Pachón.
BIT Numer. Anal., 49 (2009), 721-741.

**2008**

*The chebop system for automatic solution of
differential equations*,
with T. A. Driscoll and F. Bornemann.
BIT Numer. Math., 48 (2008), 701-723.

*Numerical analysis*.
In W. T. Gowers, ed., Princeton Companion to Mathematics,
Princeton U. Press, 2008.

*Computing A^{α},
log(A), and related matrix functions by contour
integrals*,
with N. Hale and N. J. Higham.
SIAM J. Numer. Anal., 46 (2008), 2505-2523.

**2007**

*Obituary Gene H. Golub (1932-2007)*.
Nature, 450 (2007), 962.

*Evaluating matrix functions for exponential integrators via
Carathéodory-Fejér
approximation and contour integrals*,
with T. Schmelzer.
Elect. Trans. Numer. Anal., 29 (2007), 1-18.

*The kink phenomenon in Fejér and
Clenshaw-Curtis quadrature*, with
J. A. C. Weideman.
Numer. Math., 107 (2007), 707-727.

*Computing numerically with functions instead of numbers*.
Math. Comput. Sci., 1 (2007), 9-19.

*Computing the gamma function using contour
integrals and rational approximations*,
with T. Schmelzer.
SIAM J. Numer. Anal., 45 (2007), 558-571.

*Parabolic and hyperbolic contours
for computing the Bromwich integral*,
with J. A. C. Weideman.
Math. Comp., 76 (2007), 1341-1356.

**2006**

*A rational spectral collocation method
with adaptively transformed Chebyshev grid points*,
with T.-W. Tee.
SIAM J. Sci. Comp., 28 (2006), No. 5, 1798-1811.

*Talbot quadratures and rational approximations*
with J. A. C. Weideman and T. Schmelzer.
BIT Numer. Math., 46 (2006) 46, 653-670.

*Computed eigenmodes of planar regions*,
with T. Betcke.
In N. Chernov, et al., eds.,
Recent Advances in Differential Equations
and Mathematical Physics, Contemp. Math. 412,
Amer. Math. Soc., 2006, 297-314.

**2005**

*Spectra and Pseudospectra:
The Behavior of Nonnormal Matrices and
Operators*,
with M. Embree.
Princeton U. Press, 2005.

*Ten Digit Algorithms*.
Numerical Analysis Report 05/13, Oxford University, 2005.
(From the 2005 A. R. Mitchell Lecture, Dundee.)

*Wave packet pseudomodes of variable coefficient
differential operators*.
Proc. Roy. Soc. Lond. A, 461 (2005), 3099-3122.

*Reviving the method of particular solutions*,
with T. Betcke.
SIAM Rev., 47 (2005), 469-491.

*Fourth-order time-stepping for stiff PDEs*, with
A. K. Kassam.
SIAM J. Sci. Comp., 26 (2005), 1214-1233.

**2004**

*Computations of eigenvalue avoidance in planar domains*,
with T. Betcke.
Proc. Appl. Math. Mech., 4 (2004), 634-635.

*Wave packet pseudomodes of twisted Toeplitz matrices*,
with S. J. Chapman.
Comm. Pure Appl. Math., 57 (2004), 1233-1264.

*An extension of Matlab to continuous functions and operators*,
with Z. Battles.
SIAM J. Sci. Comp. 25 (2004), 1743-1770.

*Barycentric Lagrange interpolation*,
with J.-P. Berrut.
SIAM Rev., 46 (2004), 501-517.

**2003**

*An American at Oxford*.
Oxford Magazine, May 2003.
(This essay was discussed in the Times Higher Education Supplement and
elsewhere.)

*Linearized pipe flow to Reynolds number 10 ^{7}*,
with A. Meseguer.
J. Comp. Phys., 186 (2003), 178-197.

**2002**

*Schwarz-Christoffel Mapping*, with
Tobin A. Driscoll.
Cambridge U. Press, 2002.

*Pseudospectra of rectangular matrices*,
with T. G. Wright.
IMA J. Numer. Anal., 22 (2002), 501-519.

*Piecewise continuous Toeplitz matrices and operators:
slow approach to infinity*,
with A. Böttcher and M. Embree.
SIAM J. Matrix Anal. Applics., 24 (2002), 484-489.

*A hundred-dollar, hundred-digit challenge*.
SIAM News, 35, No. 1, Jan./Feb. 2002.
(This led to two books by Bornemann et al.)

*Chastened challenge sponsor: "I misjudged"*.
SIAM News, 35, No. 6, July/Aug. 2002.
(follow-up article).

**2001**

*Numerical solution of the omitted area
problem of univalent function theory*,
with L. Banjai.
Comp. Meth. Func. Th., 1 (2001), 259-273.

*Spectra, pseudospectra and localization for random bidiagonal matrices*,
with M. Contedini and M. Embree.
Comm. Pure Appl. Math., 54 (2001), 595-623.

*Large-scale computation of pseudospectra using ARPACK and eigs*,
with T. G. Wright.
SIAM J. Sci. Comput., 23 (2001), 591-605.

*Generalizing eigenvalue theorems to pseudospectra theorems*,
with M. Embree.
SIAM J. Sci. Comput., 23 (2001), 583-590.

*Eigenvalues and musical instruments*,
with V. E. Howle.
J. Comp. Appl. Math., 135 (2001), 23-40.

*Computing Lyapunov constants for random recurrences with smooth coefficients*,
with T. G. Wright. J. Comp. Appl. Math., 132 (2001),
331-340.

**2000**

*Spectral Methods in MATLAB*.
SIAM, 2000.

*Threshold amplitudes for transition to turbulence in a pipe*,
with S. J. Chapman, D. S. Henningson, A. Meseguer, T.
Mullin, and F. T. M. Nieuwstadt.
Num. Anal. Group Report NA 00/17, Oxford U. Computing Lab., 2000.

*Predictions for scientific computing fifty years from now*.
Mathematics Today, April 2000, 53-57.
(This essay won the Catherine Richards Prize of the Inst. for Maths.
and Applics., 2000.)

*How many shuffles to randomize a deck of cards?*,
with L. M. Trefethen.
Proc. Roy. Soc. London A, 456 (2000), 2561-2568.
(This article led to dozens of press reports in newspapers, magazines,
radio and television.)

**1999**

*Growth and decay of random Fibonacci sequences*,
with M. Embree.
Proc. Roy. Soc. Lond. A, 455 (1999), 2471-2485.

*Large-amplitude transient growth in the
linear evolution of equatorial spread F with a sheared
zonal flow*,
with J. P. Flaherty and C. E. Seyler.
J. Geophys. Res., 104 (1999), 6843.

*Spectra and pseudospectra for pipe Poiseuille flow*,
with A. E. Trefethen and P. J. Schmid.
Comp. Meth. Appl. Mech. Engr., 1926 (1999),
413-420.

*Computation of pseudospectra*.
Acta Numer., 8 (1999), 247-295.

*The Kreiss matrix theorem on a general complex domain*,
with K.-C. Toh.
SIAM J. Matrix Anal. Applics., 21 (1999),
145-165.

*Green's functions for multiply connected domains via conformal mapping*,
with M. Embree.
SIAM Rev., 41 (1999), 721-744.

**1998**

*Schwarz-Christoffel mapping in the computer era*,
with T. A. Driscoll.
Proc. Int. Congr. Math. 1998, 533-542.

*From potential theory to matrix iterations in six steps*,
with T. A. Driscoll and K.-C. Toh.
SIAM Rev., 40 (1998), 547-578.

*Condition numbers of random triangular matrices*,
with D. Viswanath.
SIAM J. Matrix Anal. Applics., 19 (1998), 564-581.

*Maxims about numerical mathematics, computers, science, and life*.
SIAM News v. 31, no. 1 (1998), p. 4.

*The Chebyshev polynomials of a matrix*,
with K.-C. Toh.
SIAM J. Matrix Anal. Applics., 20 (1998), 400-419.

*A numerical analyst looks at the 'cutoff phenomenon' in
card shuffling and other Markov chains*,
with G. F. Jonsson.
In D. F. Griffiths, D. J. Higham, and G.
A. Watson, eds., Numerical Analysis 1997, Addison Wesley Longman, 1998.

**1997**

*Numerical Linear Algebra*,
with David Bau III.
SIAM, 1997 (SIAM's all-time bestseller.)

*Pseudospectra of linear operators*.
In ICIAM '95: Proceedings of the Third International Congress on
Industrial and Applied Mathematics, Akademie-Verlag, Berlin, 1996,
pp. 401-434; also SIAM Rev. 39 (1997), 383-406.

*Low-dimensional models of subcritical transition to turbulence*,
with J. S. Baggett. Phys. Fluids, 9 (1997), 1043-1053.

**1996**

*Finite Difference and Spectral Methods for
Ordinary and Partial Differential Equations*.
Graduate textbook, unpublished, 1996.

*MultiMATLAB: MATLAB on multiple processors*, with
A. E. Trefethen, V. S. Menon, C.-C. Chang, G. J. Czajkowski, and C. Myers.
Tech. Rep. CTC96TR293, Cornell Theory Center, 1996.

*Matrix behaviour, unitary reducibility, and Hadamard products*,
with D. Viswanath.
Tech. Rep. TR96-1596, Dept. of Comp. Sci., Cornell U., July, 1996.

*Pseudospectra for the wave operator with an absorbing boundary*,
with T. A. Driscoll.
J. Comp. Appl. Math., 69 (1996), 125-142.

*Calculation of pseudospectra by the Arnoldi iteration*,
with K.-C. Toh.
SIAM J. Sci. Comp. 17, (1996), 1-15.

**1995**

*A mostly linear model of transition to turbulence*,
with J. S. Baggett and T. A. Driscoll.
Phys. Fluids, 7 (1995), 833-838.

*Do the pseudospectra of a matrix determine its behavior?*,
with A. Greenbaum.
Unpublished technical report, 1995.

**1994**

*Pseudospectra of the convection-diffusion operator*,
with S. C. Reddy .
SIAM J. Appl. Math., 54 (1994), 1634-1649.

*Pseudozeros of polynomials and pseudospectra of companion matrices*,
with K.-C. Toh.
Numer. Math., 68 (1994), 403-425.

*GMRES/CR and Arnoldi/Lanczos as matrix approximation problems*,
with A. Greenbaum.
SIAM J. Sci. Comput., 15 (1994), 359-368.

*From the Buffon needle problem to the Kreiss Matrix Theorem*,
with E. Wegert. Amer. Math. Monthly, 101 (1994), 132-139.

**1993**

*Numerical construction of conformal maps*.
Appendix to E. B. Saff and A. D. Snider, Fundamentals of Complex
Analysis, 2nd ed., Prentice Hall, 1993.

*Hydrodynamic stability without eigenvalues*,
with A. E. Trefethen, S. C. Reddy, and T. A. Driscoll.
Science, 261 (1993), 578-584.

*Stiffness of ODEs*,
with D. J. Higham.
BIT Numer. Math., 33 (1993), 285-303.

*The definition of numerical analysis*.
SIAM News 25, 6 Nov. 1992. Reprinted in Bull. Inst. Maths. and
Applics., 1993 and again as an appendix to L. N. Trefethen and
D. A. Bau, III, Numerical Linear Algebra, SIAM, 1997.

**1992**

*Pseudospectra of matrices*.
In D. F. Griffiths and G. A. Watson, eds., Numerical Analysis 1991,
Longman, 1992.

*Eigenvalues and pseudo-eigenvalues of Toeplitz matrices*,
with L. Reichel.
Lin. Alg. Applics., 162-164 (1992), 153-185.

*How fast are nonsymmetric matrix iterations?*,
with N. M. Nachtigal and S. C. Reddy.
SIAM J. Matrix Anal. Applics., 13 (1992), 778-795.

*A hybrid GMRES algorithm for nonsymmetric linear systems*,
with N. M. Nachtigal and L. Reichel.
SIAM J. Matrix Anal. Applics., 13 (1992), 796-825.

*Stability of the method of lines*, with S. C. Reddy.
Numer. Math., 62 (1992), 235-267.

**1991**

*Two results on polynomial interpolation in equally spaced points*,
with J. A. C. Weideman.
J. Approx. Theory, 65 (1991), 247-260.

**1990**

*Lax-stability of fully discrete spectral methods
via stability regions and pseudo-eigenvalues*,
with S. C. Reddy.
Comp. Meth. Appl. Mech. Engr., 80 (1990), 147-164.

*The CF table*,
with E. Hayashi and M. H. Gutknecht.
Constr. Approx., 6 (1990), 195-223.

*A modified Schwarz-Christoffel transformation for elongated regions*
with L. H. Howell.
SIAM J. Sci. Stat. Comput., 11 (1990), 928-949.

*Approximation theory and numerical linear algebra*.
In J. C. Mason and M. G. Cox, eds., Algorithms for Approximation II,
Chapman and Hall, 1990.

*Average-case stability of Gaussian elimination*,
with R. S. Schreiber.
SIAM J. Matrix Anal. Applics., 11 (1990), 335-360.

**1989**

*Schwarz-Christoffel mapping in the 1980's*.
Numerical Analysis Report 89-1, Dept. of Mathematics, MIT, 1989.

*SCPACK User's Guide*.
Numerical Analysis Report 89-2, Dept. of Mathematics, MIT, 1989.
(An earlier edition appeared as an ICASE internal report in 1983.)

**1988**

*Lax-stability vs. eigenvalue stability of spectral methods*.
In K. W. Morton and M. J. Baines, eds., Clarendon Press, 1988.

*The eigenvalues of second-order spectral differentiation matrices*,
with J. A. C. Weideman.
SIAM J. Numer. Anal., 25 (1988), 1279-1298.

*Ill-posedness of absorbing boundary conditions for migration*,
with L. H. Howell.
Geophysics, 53 (1988), 593-603.

*Fourier analysis of the SOR iteration*,
with R. J. LeVeque.
IMA J. Numer. Anal., 8 (1988), 273-279.

*Wide-angle one-way wave equations*,
with L. Halpern.
J. Acoust. Soc. Amer., 84 (1988), 1397-1404.

**1987**

*Padé, stable Padé, and Chebyshev-Padé approximation*
with M. H. Gutknecht. In J. C. Mason and M. G. Cox, eds.,
Algorithms for Approximation, Clarendon Press, 1987.

*An instability phenomenon in spectral methods*,
with M. R. Trummer.
SIAM J. Numer. Anal., 24 (1987), 1008-1023.

*Ideal jet flow in two dimensions*,
with F. Dias and A. R. Elcrat.
J. Fluid Mech., 185 (1987), 275-288.

**1986**

*Numerical Conformal Mapping, editor*.
Elsevier, 1986.

*Classical free-streamline flow over a polygonal obstacle*,
with A. R. Elcrat.
J. Comp. Appl. Math., 14 (1986), 251-265.

*MATLAB programs for CF approximation*.
In C. K. Chui, et al., eds., Approximation Theory V, Academic Press, 1986.
(This is probably the first research paper ever published containing a MATLAB
program.)

*Conformal mapping solution of Laplace's equation
on a polygon with oblique derivative boundary conditions*,
with R. J. Williams.
J. Comp. Appl. Math., 14 (1986), 227-249.

*Well-posedness of one-way wave equations and absorbing boundary conditions*,
with L. Halpern.
Math. Comp., 47 (1986), 421-435.

*Dispersion, dissipation, and stability*.
In D. F. Griffiths and G. A. Watson, eds., Numerical Analysis, Longman,
1986.

**1985**

*Three mysteries of Gaussian elimination*.
ACM SIGNUM Newsletter, October 1985.

*Stability of hyperbolic finite-difference models with one or two boundaries*.
In B. E. Engquist, et al., eds., Large-Scale Computations in Fluid
Mechanics, v. 2, Amer. Math. Soc., 1985.

*Stability of finite-difference models
containing two boundaries or interfaces*.
Math. Comp., 45 (1985), 279-300.

*On convergence and degeneracy in rational
Padé and Chebyshev approximation*,
with M. H. Gutknecht.
SIAM J. Math. Anal., 16 (1985), 198-210.

**1984**

*On the resolvent condition in the Kreiss Matrix Theorem*,
with R. J. LeVeque.
BIT Numer. Math., 24 (1984), 584-591.

*The asymptotic accuracy of rational best
approximations to e ^{z} on a disk*.
J. Approx. Th., 40 (1984), 380-383.

**1983**

*Circularity of the error curve and sharpness
of the CF method in complex Chebyshev approximation*.
SIAM J. Numer. Anal., 20 (1983), 1258-1263.

*The Carathéodory-Fejér (CF) method for recursive digital
filter design*, with
M. H. Gutknecht and J. O. Smith.
IEEE Trans. Acoust., Speech, Sign. Proc. ASSP-31 (1983),
1417-1426.

*The Carathéodory-Fejér method
for real rational approximation*,
with M. H. Gutknecht.
SIAM J. Numer. Anal. 20 (1983), 420-436.

*Real vs. complex rational Chebyshev approximation on an interval*,
with M. H. Gutknecht.
Trans. Amer. Math. Soc., (1983), 555-561.

*Nonuniqueness of best rational Chebyshev approximations on the unit disk*,
with M. H. Gutknecht.
J. Approx. Th., 39 (1983), 275-288.

*Real and complex Chebyshev approximation on the unit disk and interval*,
with M. H. Gutknecht.
Bull. Amer. Math. Soc., 8 (1983), 455-458.

*Chebyshev approximation on the unit disk*.
In Computational Aspects of Complex Analysis, H. Werner, et al., eds.,
D. Reidel, 1983.

*Group velocity interpretation of the stability
theory of Gustafsson, Kreiss, and Sundström*.
J. Comp. Phys., 49 (1983), 199-217.

**1982**

*Group velocity in finite difference schemes*.
SIAM Rev., 24 (1982), 113-136.

*Real polynomial Chebyshev approximation by
the Carathéodory-Fejér method*,
with M. H. Gutknecht.
SIAM J. Numer. Anal., 19 (1982), 358-371.

**1981**

*Rational Chebyshev approximation on the unit disk*.
Numer. Math., 37 (1981), 297-320.

*Near-circularity of the error curve in complex Chebyshev approximation*.
J. Approx. Theory, 31 (1981), 344-367.

**1980**

*Computation and application of Schwarz-Christoffel transformations*.
In Proceedings of the 1980 Army Numerical Analysis and
Computers Conference, Army Research Office.

*Numerical computation of the Schwarz-Christoffel transformation*
and
*erratum*.
SIAM J. Sci. Stat. Comput., 1 (1980), 82-102.