Voir la notice de l'article provenant de la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts
@article{PIM_1973_N_S_16_30_a6, author = {Milan {\DJ}uri\'c}, title = {Topological {Structures} {On} {Classes} {(III)}}, journal = {Publications de l'Institut Math\'ematique}, pages = {53 }, publisher = {mathdoc}, volume = {_N_S_16}, number = {30}, year = {1973}, url = {http://geodesic.mathdoc.fr/item/PIM_1973_N_S_16_30_a6/} }
Milan Đurić. Topological Structures On Classes (III). Publications de l'Institut Mathématique, _N_S_16 (1973) no. 30, p. 53 . http://geodesic.mathdoc.fr/item/PIM_1973_N_S_16_30_a6/