1. Andreassen, D.O. and G.A. Watson. Linear Chebyshev approximation without Chebyshev sets, B.I.T. 16 (1976), 349–362.
2. Blatt, H.P. A simultaneous exchange algorithm for semi-infinite linear programming, paper given at International Symposium on Semi-Infinite Programming and Applications 1981, Austin, Texas.
3. Carasso, C. and P.J. Laurent. Un algorithme général pour 1’approximation au sens de Tchebycheff de fonctions bornées sur un ensemble quelconque, in Approximation Theory, Lecture Notes in Math. 556, eds. R. Schaback and K. Scherer, Springer Verlag, Berlin (1976).
4. Defert, Ph. and J.P. Thiran. Chebyshev approximation by multivariate polynomials. University of Namur Report 80/10 (1980).
5. Fletcher, R. Practical methods of optimization. Vol. II Constrained optimization, Wiley, Chichester (1981).