TY  - JOUR
AU  - Pudlák, Pavel
TI  - The observational predicate calculus and complexity of computations (Preliminary communication)
JO  - Commentationes Mathematicae Universitatis Carolinae
PY  - 1975
SP  - 395
EP  - 398
VL  - 16
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMUC_1975__16_2_a15/
LA  - en
ID  - CMUC_1975__16_2_a15
ER  -