%0 Journal Article %A A. M. Minkin %A A. P. Khromov %T Оп regularity of self-adjoint boundary conditions %J Izvestiya of Saratov University. Mathematics. Mechanics. Informatics %D 2005 %P 48-61 %V 5 %N 1-2 %U http://geodesic.mathdoc.fr/item/ISU_2005_5_1-2_a4/ %G ru %F ISU_2005_5_1-2_a4