%0 Journal Article %A B. P. Bogoslovskii %A V. A. Kazakov %T Movable singularities of a nonlinear equation %J Differencialʹnye uravneniâ %D 1993 %P 933-937 %V 29 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1993_29_6_a2/ %G ru %F DE_1993_29_6_a2