%0 Journal Article %A Yu. F. Dolgiǐ %T Properties of the monodromy operator of a~periodic system of differential equations of neutral type with deviating argument %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1988 %P 23-29 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1988_9_a3/ %G ru %F IVM_1988_9_a3