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@article{DE_1968_4_10_a9, author = {V. I. Korzyuk}, title = {A conjugacy problem for equations of hyperbolic and parabolic types}, journal = {Differencialʹnye uravneni\^a}, pages = {1854--1866}, publisher = {mathdoc}, volume = {4}, number = {10}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1968_4_10_a9/} }
V. I. Korzyuk. A conjugacy problem for equations of hyperbolic and parabolic types. Differencialʹnye uravneniâ, Tome 4 (1968) no. 10, pp. 1854-1866. http://geodesic.mathdoc.fr/item/DE_1968_4_10_a9/