%0 Journal Article
%A M.K. Bose,
%A Ajoy Mukharjee
%T On countable families
 of topologies on a set
%J Novi Sad Journal of Mathematics
%D 2010
%P 7-16
%V 40
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NSJOM_2010_40_2a_1/
%F NSJOM_2010_40_2a_1