Third order conjugate systems and the problem of their focal transformations
Doklady Akademii Nauk, Tome 131 (1960) no. 2, pp. 265-268
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@article{DAN_1960_131_2_a12,
author = {G. I. Trushin},
title = {Third order conjugate systems and the problem of their focal transformations},
journal = {Doklady Akademii Nauk},
pages = {265--268},
publisher = {mathdoc},
volume = {131},
number = {2},
year = {1960},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/DAN_1960_131_2_a12/}
}
G. I. Trushin. Third order conjugate systems and the problem of their focal transformations. Doklady Akademii Nauk, Tome 131 (1960) no. 2, pp. 265-268. http://geodesic.mathdoc.fr/item/DAN_1960_131_2_a12/