1 - Choice sequences : a chapter of intuitionistic mathematics |
2 - Intuitionism : an introduction |
3 - Intuitionism and proof theory : proceedings of the Summer conference at Buffalo N. Y. 1968 |
4 - Intuitionistic logic model theory and forcing |
5 - Mathematische Grundlagenforschung Intuitionismus - Beweistheorie |
6 - Proof theory and intuitionistic systems |