@article{DE_1990_26_7_a8,
     author = {G. V. Nesterenko},
     title = {The use of pseudosymmetries for constructing exact solutions of differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1173--1178},
     publisher = {mathdoc},
     volume = {26},
     number = {7},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1990_26_7_a8/}
}