%0 Journal Article %A V. A. Mikhailets %T Distribution of the eigenvalues of finite multiplicity of Neumann extensions of an elliptic operator %J Differencialʹnye uravneniâ %D 1994 %P 178-179 %V 30 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1994_30_1_a21/ %G ru %F DE_1994_30_1_a21