%0 Journal Article %A Yu. N. Bibikov %T Quasiperiodic solutions of two-dimensional periodic systems of differential equations of neutral type depending on a small parameter %J Differencialʹnye uravneniâ %D 1982 %P 1980-1982 %V 18 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1982_18_11_a18/ %G ru %F DE_1982_18_11_a18