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@article{DAN_1986_287_5_a12, author = {V. A. Chernyatin}, title = {Necessary and sufficient conditions for existence of the classical}, journal = {Doklady Akademii Nauk}, pages = {1080--1083}, publisher = {mathdoc}, volume = {287}, number = {5}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1986_287_5_a12/} }
V. A. Chernyatin. Necessary and sufficient conditions for existence of the classical. Doklady Akademii Nauk, Tome 287 (1986) no. 5, pp. 1080-1083. http://geodesic.mathdoc.fr/item/DAN_1986_287_5_a12/