TY  - JOUR
AU  - Henkin, Leon
TI  - Relativization with respect to formulas and its use in proofs of independence
JO  - Compositio Mathematica
PY  - 1968
SP  - 88
EP  - 106
VL  - 20
PB  - Wolters-Noordhoff Publishing
UR  - http://www.numdam.org/item/CM_1968__20__88_0/
LA  - en
ID  - CM_1968__20__88_0
ER  -