@article{DE_1993_29_6_a2,
     author = {B. P. Bogoslovskii and V. A. Kazakov},
     title = {Movable singularities of a nonlinear equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {933--937},
     publisher = {mathdoc},
     volume = {29},
     number = {6},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1993_29_6_a2/}
}