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@article{DAN_1993_332_4_a4, author = {\`E. G. Poznyak and A. G. Popov}, title = {Lobachevskii geometry and equations of mathematical physics}, journal = {Doklady Akademii Nauk}, pages = {418--421}, publisher = {mathdoc}, volume = {332}, number = {4}, year = {1993}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1993_332_4_a4/} }
È. G. Poznyak; A. G. Popov. Lobachevskii geometry and equations of mathematical physics. Doklady Akademii Nauk, Tome 332 (1993) no. 4, pp. 418-421. http://geodesic.mathdoc.fr/item/DAN_1993_332_4_a4/