%0 Journal Article %A S. I. Mitrokhin %T Spectral properties of a~fourth-order differential operator with integrable coefficients %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2010 %P 188-197 %V 270 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_2010_270_a13/ %G ru %F TM_2010_270_a13