%0 Journal Article %A A. A. Shkalikov %T Strongly damped pencils of operators and solvability of the corresponding operator-differential equations %J Sbornik. Mathematics %D 1989 %P 97-119 %V 63 %N 1 %U http://geodesic.mathdoc.fr/item/SM_1989_63_1_a7/ %G en %F SM_1989_63_1_a7