%0 Journal Article %A E. A. Begovatov %T Some properties of eigenvalues of the Schrödinger operator %J Issledovaniya po Prikladnoi Matematike i Informatike %D 1976 %P 105-110 %V 5 %N 5 %U http://geodesic.mathdoc.fr/item/KUIPM_1976_5_5_a9/ %G ru %F KUIPM_1976_5_5_a9