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@article{DE_1989_25_7_a27, author = {R. P. Malayshka}, title = {Symmetries of the {Birkhoff} equations, and conservation laws}, journal = {Differencialʹnye uravneni\^a}, pages = {1275--1277}, publisher = {mathdoc}, volume = {25}, number = {7}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1989_25_7_a27/} }
R. P. Malayshka. Symmetries of the Birkhoff equations, and conservation laws. Differencialʹnye uravneniâ, Tome 25 (1989) no. 7, pp. 1275-1277. http://geodesic.mathdoc.fr/item/DE_1989_25_7_a27/