Schauder Bases in Banach Spaces of Continuous Functions (Lecture Notes in Mathematics, 918)
Pade Approximants for Operators: Theory and Applications (Lecture Notes in Mathematics, 1065)
Integral Operators in Potential Theory (Lecture Notes in Mathematics, 823)
Approximation of Functions of Several Variables and Imbedding Theorems (Grundlehren der mathematischen Wissenschaften)
Singular Integrals (Lecture Notes in Mathematics, 200)
Differential Calculus in Locally Convex Spaces (Lecture Notes in Mathematics, 417)
Geometry and Probability in Banach Spaces
Extension of Positive Operators and Korovkin Theorems (Lecture Notes in Mathematics, 904)
Approximation with Positive Linear Operators and Linear Combinations
Bernstein Operators and Their Properties