%0 Journal Article %A D. I. Borisov %A R. R. Gadyl'shin %T The spectrum of a self-adjoint differential %J Sbornik. Mathematics %D 2007 %P 1063-1093 %V 198 %N 8 %U http://geodesic.mathdoc.fr/item/SM_2007_198_8_a0/ %G en %F SM_2007_198_8_a0