TY  - JOUR
AU  - M.K. Bose,
AU  - Ajoy Mukharjee
TI  - On countable families
 of topologies on a set
JO  - Novi Sad Journal of Mathematics
PY  - 2010
SP  - 7
EP  - 16
VL  - 40
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/NSJOM_2010_40_2a_1/
ID  - NSJOM_2010_40_2a_1
ER  -