@article{DAN_1974_215_6_a1,
     author = {A. D. Gorbunov},
     title = {Generalization of the method of contraction mappings},
     journal = {Doklady Akademii Nauk},
     pages = {1285--1288},
     year = {1974},
     volume = {215},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_215_6_a1/}
}