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@article{PIM_1971_N_S_12_26_a3, author = {Ljubomir B. \'Ciri\'c}, title = {A {Certain} {Class} {Of} {Mappings} {In} {Topological} {Spaces}}, journal = {Publications de l'Institut Math\'ematique}, pages = {27 }, publisher = {mathdoc}, volume = {_N_S_12}, number = {26}, year = {1971}, url = {http://geodesic.mathdoc.fr/item/PIM_1971_N_S_12_26_a3/} }
Ljubomir B. Ćirić. A Certain Class Of Mappings In Topological Spaces. Publications de l'Institut Mathématique, _N_S_12 (1971) no. 26, p. 27 . http://geodesic.mathdoc.fr/item/PIM_1971_N_S_12_26_a3/