1. Zur Anzahl der Interpolations-punkte polynomialer Tschebyscheff-Approximationen im Einheitskreis;Blatt,1978
2. Best uniform approximation by analytic functions;Carleson;Acta Math.,1963
3. Uniform Approximation as a Limit of L2 Approximations;Cline,1970
4. Linear Chebyshev approximation in the complex plane using Lawson's algorithm;Ellacott;Math. Comp.,1976
5. Geometric theory of functions of a complex variable;Goluzin;Amer. Math. Soc. Transl.,1969