Chebyshev rational approximations to e−x in [0, +∞) and applications to heat-conduction problems

Achieser, 1956 Ciarlet, 1967, Numerical methods of high-order accuracy for nonlinear boundary value problems. I. One dimensional problem, Numer. Math., 9, 394, 10.1007/BF02162155 W. J. Cody, W. Fraser, and J. F. Hart, Rational Chebyshev approximation using linear equations. Numer. Math. To appear. Meinardus, 1967 Meinardus, 1967, Abschätzungen der Minimalabweichung bei rationaler Approximation, 42 Harvey S. Price and Richard S. Varga, Numerical analysis of simplified mathematical models of fluid flow in porous media. Proceedings of Symposia in Applied Mathematics, Vol. XX (to appear). American Mathematical Society, Providence. Varga, 1961, On higher order stable implicit methods for solving parabolic partial differential equations, J. Math. Phys., 40, 220, 10.1002/sapm1961401220 Walsh, 1965, The convergence of sequences of rational functions of best approximation with some free poles, 1 Werner, 1966