TY  - JOUR
AU  - Novák, Josef
AU  - Novotný, Miroslav
TI  - On the convergence in $\sigma$-algebras of point-sets
JO  - Czechoslovak Mathematical Journal
PY  - 1953
SP  - 291
EP  - 296
VL  - 03
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1953.100089/
DO  - 10.21136/CMJ.1953.100089
LA  - en
ID  - 10_21136_CMJ_1953_100089
ER  -