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@article{DE_1978_14_7_a23, author = {V. D. Taku}, title = {Hyperplanes of symmetry of a system of differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {1332--1334}, publisher = {mathdoc}, volume = {14}, number = {7}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1978_14_7_a23/} }
V. D. Taku. Hyperplanes of symmetry of a system of differential equations. Differencialʹnye uravneniâ, Tome 14 (1978) no. 7, pp. 1332-1334. http://geodesic.mathdoc.fr/item/DE_1978_14_7_a23/