@article{DE_1977_13_8_a27,
     author = {M. V. Shvetskii},
     title = {The functionally invariant solutions of a second order quasilinear partial differential equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1534--1536},
     year = {1977},
     volume = {13},
     number = {8},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_8_a27/}
}