@article{DAN_1971_197_6_a4,
     author = {I. A. Krass},
     title = {On continuity of the technological mapping of the {Neumann{\textendash}Gale} model},
     journal = {Doklady Akademii Nauk},
     pages = {1255--1257},
     year = {1971},
     volume = {197},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_197_6_a4/}
}