TY  - JOUR
AU  - R.L. Goodstein
TI  - Models of Propositional Calculi in Recursive Arithmetic.
JO  - Mathematica Scandinavica
PY  - 1958
SP  - 293
EP  - 296
VL  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MS2_1958__6_165695/
ID  - MS2_1958__6_165695
ER  -