TY  - JOUR
AU  - Frolík, Zdeněk
TI  - On the descriptive theory of sets
JO  - Czechoslovak Mathematical Journal
PY  - 1963
SP  - 335
EP  - 359
VL  - 13
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1963.100573/
DO  - 10.21136/CMJ.1963.100573
LA  - en
ID  - 10_21136_CMJ_1963_100573
ER  -