%0 Journal Article %A V. I. Mironenko %T Reflecting function and classification of periodic differential systems %J Differencialʹnye uravneniâ %D 1984 %P 1635-1638 %V 20 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1984_20_9_a25/ %G ru %F DE_1984_20_9_a25