%0 Journal Article %A S. G. Kondratenya %T Systems of two differential equations having no solutions with movable essential singular points %J Differencialʹnye uravneniâ %D 1973 %P 1214-1221 %V 9 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1973_9_7_a5/ %G ru %F DE_1973_9_7_a5