%0 Journal Article %A R. F. Efendiev %T The inverse problem for a class of ordinary differential operators with periodic coefficients %J Žurnal matematičeskoj fiziki, analiza, geometrii %D 2004 %P 114-121 %V 11 %N 1 %U http://geodesic.mathdoc.fr/item/JMAG_2004_11_1_a6/ %G ru %F JMAG_2004_11_1_a6