%0 Journal Article %A D. G. Rakhimov %T On reguliration multiple eigenvalue by reduction pseudoperturbation methods %J Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ %D 2012 %P 35-41 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/VSGU_2012_6_a4/ %G ru %F VSGU_2012_6_a4