@article{DE_2004_40_10_a6,
     author = {S. A. Shchegolev},
     title = {On some classes of solutions of two-dimensional multifrequency quasilinear differential systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1342--1347},
     year = {2004},
     volume = {40},
     number = {10},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2004_40_10_a6/}
}