@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/}
}