Assertions depending on time and corresponding logical calculi Andrzej Grzegorczyk — 1968 Compositio Mathematica
Some relational systems and the associated topological spaces Andrzej Grzegorczyk — 1967 Fundamenta Mathematicae
On the definitions of computable real continuous functions Andrzej Grzegorczyk — 1957 Fundamenta Mathematicae
An unfinitizability proof by means of restricted reduced power Andrzej Grzegorczyk — 1971 Fundamenta Mathematicae
Some classes of recursive functions Grzegorczyk, Andrzej — 1953 Introduction§ 1. Preliminary notions§ 2. Elementary functions§ 3. Classes based on limited recursion§ 4. Classes Є n§ 5. Applications of the class Є n