%0 Journal Article %A S. G. Kondratenya %T The class of systems of differential equations which have no solutions with mobile essentially singular points %J Differencialʹnye uravneniâ %D 1969 %P 263-272 %V 5 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1969_5_2_a4/ %G ru %F DE_1969_5_2_a4