@article{DE_1991_27_9_a17,
     author = {M. Yu. Filimonov},
     title = {On the representation of solutions of mixed problems for the nonlinear wave equation by special double series},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1625--1632},
     publisher = {mathdoc},
     volume = {27},
     number = {9},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1991_27_9_a17/}
}