A biaxial invariant of a ruled surface
Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Proceedings of Seminar of the Geometry Department. I, Tome 125 (1965) no. 1, pp. 74-78
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@article{UZKU_1965_125_1_a3,
author = {I. V. Zuev},
title = {A biaxial invariant of a~ruled surface},
journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
pages = {74--78},
publisher = {mathdoc},
volume = {125},
number = {1},
year = {1965},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/UZKU_1965_125_1_a3/}
}
I. V. Zuev. A biaxial invariant of a ruled surface. Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Proceedings of Seminar of the Geometry Department. I, Tome 125 (1965) no. 1, pp. 74-78. http://geodesic.mathdoc.fr/item/UZKU_1965_125_1_a3/