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@article{DAN_1972_206_5_a5, author = {A. F. Leont'ev}, title = {On a complement to {Hadamard{\textquoteright}s} theorem}, journal = {Doklady Akademii Nauk}, pages = {1049--1051}, publisher = {mathdoc}, volume = {206}, number = {5}, year = {1972}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1972_206_5_a5/} }
A. F. Leont'ev. On a complement to Hadamard’s theorem. Doklady Akademii Nauk, Tome 206 (1972) no. 5, pp. 1049-1051. http://geodesic.mathdoc.fr/item/DAN_1972_206_5_a5/