%0 Journal Article %A I. N. Klimashevskaya %A S. G. Kondratenya %T Elementary classes of autonomous systems of two differential equations that do not have solutions with movable nonalgebraic singular points %J Differencialʹnye uravneniâ %D 1991 %P 535-537 %V 27 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1991_27_3_a21/ %G ru %F DE_1991_27_3_a21