%0 Journal Article %A V. T. Sardarian %T Estimates for eigenvalues and completeness of eigenfunctions of non selfadjoint semielliptic differential operators %J Proceedings of the Yerevan State University. Physical and mathematical sciences %D 2000 %P 10-18 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/UZERU_2000_2_a1/ %G ru %F UZERU_2000_2_a1