%0 Journal Article %A B. A. Shuvar %A M. I. Kopach %T Two-sided operator inequalities with nonmonotone operators %J Differencialʹnye uravneniâ %D 2006 %P 549-552 %V 42 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2006_42_4_a14/ %G ru %F DE_2006_42_4_a14