%0 Journal Article %A V. A. Yurko %T An inverse problem for differential operator pencils %J Sbornik. Mathematics %D 2000 %P 1561-1586 %V 191 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2000_191_10_a8/ %G en %F SM_2000_191_10_a8