%0 Journal Article %A V. I. Mironenko %T Differential systems with $\phi$-solutions %J Differencialʹnye uravneniâ %D 1974 %P 358-360 %V 10 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1974_10_2_a23/ %G ru %F DE_1974_10_2_a23