Voir la notice de l'article provenant de la source Novi sad journal of mathematics website
@article{NSJOM_2010_40_2a_1, author = {M.K. Bose, and Ajoy Mukharjee}, title = {On countable families of topologies on a set}, journal = {Novi Sad Journal of Mathematics}, pages = {7-16}, publisher = {mathdoc}, volume = {40}, number = {2}, year = {2010}, url = {http://geodesic.mathdoc.fr/item/NSJOM_2010_40_2a_1/} }
M.K. Bose,; Ajoy Mukharjee. On countable families of topologies on a set. Novi Sad Journal of Mathematics, Tome 40 (2010) no. 2. http://geodesic.mathdoc.fr/item/NSJOM_2010_40_2a_1/