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@article{DE_1970_6_7_a23, author = {I. Ya. Viner}, title = {Partial differential equations with involutions}, journal = {Differencialʹnye uravneni\^a}, pages = {1320--1322}, publisher = {mathdoc}, volume = {6}, number = {7}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1970_6_7_a23/} }
I. Ya. Viner. Partial differential equations with involutions. Differencialʹnye uravneniâ, Tome 6 (1970) no. 7, pp. 1320-1322. http://geodesic.mathdoc.fr/item/DE_1970_6_7_a23/