Introduction to Optimization Theory in a Hilbert Space
Normed Linear Spaces
Über die Menge der Minimallösungen bei linearen und nichtlinearen Approximationsproblemen (German Edition)
Functional Analysis
A Course on Optimization and Best Approximation (Lecture Notes in Mathematics, 257)
Norm Ideals of Completely Continuous Operators
Linear Topological Spaces
Characterizations of Inner Product Spaces (Operator Theory: Advances and Applications)
Geometry and Nonlinear Analysis in Banach Spaces (Lecture Notes in Mathematics, 1131)
Einführung in die Funktionalanalysis
