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@article{DAN_1961_139_5_a1, author = {Ya. P. Blank}, title = {On translation surfaces of constant curvature}, journal = {Doklady Akademii Nauk}, pages = {1037--1039}, publisher = {mathdoc}, volume = {139}, number = {5}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_139_5_a1/} }
Ya. P. Blank. On translation surfaces of constant curvature. Doklady Akademii Nauk, Tome 139 (1961) no. 5, pp. 1037-1039. http://geodesic.mathdoc.fr/item/DAN_1961_139_5_a1/