Mean-Square Approximation by Generalized Rational Functions.
A theorem on interpolation in Haar subspaces.
A theorem on interpolation in Haar subspaces. (Short Communication).
The fundamentality of sets of ridge functions.
Two new algorithms for rational approximation.
Newton's Method for Convex Programming and Tchebycheff Approximation.
On Rational Chebyshev Approximation.
The Existence and Unicity of Best Approximations.
Corrigendum to "The Existence and Unicity of Best Approximations".
On the existence and characterization of minimal projections.
Some Polynomial Approximation Operators.
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