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@article{DE_1967_3_5_a6, author = {N. A. Lukashevich}, title = {The theory of {Painlev\'e's} fourth equation}, journal = {Differencialʹnye uravneni\^a}, pages = {771--780}, publisher = {mathdoc}, volume = {3}, number = {5}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1967_3_5_a6/} }
N. A. Lukashevich. The theory of Painlev\'e's fourth equation. Differencialʹnye uravneniâ, Tome 3 (1967) no. 5, pp. 771-780. http://geodesic.mathdoc.fr/item/DE_1967_3_5_a6/