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@article{AA_1996_8_3_a2, author = {Yu. D. Burago and B. V. Kalinin}, title = {Smoothness and singularities of convex hypersurfaces}, journal = {Algebra i analiz}, pages = {39--55}, publisher = {mathdoc}, volume = {8}, number = {3}, year = {1996}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AA_1996_8_3_a2/} }
Yu. D. Burago; B. V. Kalinin. Smoothness and singularities of convex hypersurfaces. Algebra i analiz, Tome 8 (1996) no. 3, pp. 39-55. http://geodesic.mathdoc.fr/item/AA_1996_8_3_a2/