%0 Journal Article %A I. M. Guseinov %A I. M. Nabiev %T A class of inverse problems for a quadratic pencil of Sturm-Liouville operators %J Differencialʹnye uravneniâ %D 2000 %P 418-420 %V 36 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2000_36_3_a16/ %G ru %F DE_2000_36_3_a16