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@article{DAN_1962_146_3_a1, author = {M. A. Akivis}, title = {On a class of tangentially degenerate surfaces}, journal = {Doklady Akademii Nauk}, pages = {515--518}, publisher = {mathdoc}, volume = {146}, number = {3}, year = {1962}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1962_146_3_a1/} }
M. A. Akivis. On a class of tangentially degenerate surfaces. Doklady Akademii Nauk, Tome 146 (1962) no. 3, pp. 515-518. http://geodesic.mathdoc.fr/item/DAN_1962_146_3_a1/