On surfaces $V_n$ with multidimensional isotropic conjugate directions in spaces $R_N$ or $S_N$
Doklady Akademii Nauk, Tome 114 (1957) no. 4, pp. 702-705
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@article{DAN_1957_114_4_a6,
author = {\"U. G. Lumiste},
title = {On surfaces $V_n$ with multidimensional isotropic conjugate directions in spaces $R_N$ or $S_N$},
journal = {Doklady Akademii Nauk},
pages = {702--705},
year = {1957},
volume = {114},
number = {4},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/DAN_1957_114_4_a6/}
}
Ü. G. Lumiste. On surfaces $V_n$ with multidimensional isotropic conjugate directions in spaces $R_N$ or $S_N$. Doklady Akademii Nauk, Tome 114 (1957) no. 4, pp. 702-705. http://geodesic.mathdoc.fr/item/DAN_1957_114_4_a6/