@article{DE_1992_28_9_a18,
     author = {N. S. Berezkina and I. P. Martynov},
     title = {Solutions of a nonlinear partial differential system},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1627--1630},
     publisher = {mathdoc},
     volume = {28},
     number = {9},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1992_28_9_a18/}
}