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@article{DAN_1964_158_6_a3, author = {V. I. Diskant}, title = {Stability in a theorem of {Liebmann's}}, journal = {Doklady Akademii Nauk}, pages = {1257--1259}, publisher = {mathdoc}, volume = {158}, number = {6}, year = {1964}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1964_158_6_a3/} }
V. I. Diskant. Stability in a theorem of Liebmann's. Doklady Akademii Nauk, Tome 158 (1964) no. 6, pp. 1257-1259. http://geodesic.mathdoc.fr/item/DAN_1964_158_6_a3/