TY  - JOUR
AU  - Troelstra, A. S.
TI  - The scientific work of A. Heyting
JO  - Compositio Mathematica
PY  - 1968
SP  - 3
EP  - 12
VL  - 20
PB  - Wolters-Noordhoff Publishing
UR  - http://www.numdam.org/item/CM_1968__20__3_0/
LA  - en
ID  - CM_1968__20__3_0
ER  -