@article{DAN_1995_343_2_a2,
     author = {L. V. Ovsyannikov},
     title = {Regular and nonregular partially invariant solutions},
     journal = {Doklady Akademii Nauk},
     pages = {156--159},
     publisher = {mathdoc},
     volume = {343},
     number = {2},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1995_343_2_a2/}
}