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@article{DE_1991_27_5_a11, author = {P. P. Zabreiko and L. G. Tret'yakova}, title = {Periodic solutions of a quasilinear telegraph equation}, journal = {Differencialʹnye uravneni\^a}, pages = {815--826}, publisher = {mathdoc}, volume = {27}, number = {5}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1991_27_5_a11/} }
P. P. Zabreiko; L. G. Tret'yakova. Periodic solutions of a quasilinear telegraph equation. Differencialʹnye uravneniâ, Tome 27 (1991) no. 5, pp. 815-826. http://geodesic.mathdoc.fr/item/DE_1991_27_5_a11/