@article{DAN_1978_243_1_a7,
     author = {M. M. Mirzoyan},
     title = {On the cluster sets of mappings of topological spaces},
     journal = {Doklady Akademii Nauk},
     pages = {37--40},
     publisher = {mathdoc},
     volume = {243},
     number = {1},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_243_1_a7/}
}