Geodesic
Estimates for eigenvalues and completeness of eigenfunctions of non selfadjoint semielliptic differential operators
Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 2 (2000), pp. 10-18 
V. T. Sardarian. Estimates for eigenvalues and completeness of eigenfunctions of non selfadjoint semielliptic differential operators. Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 2 (2000), pp. 10-18. http://geodesic.mathdoc.fr/item/UZERU_2000_2_a1/
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Voir la notice de l'article provenant de la source Math-Net.Ru

[1] G. A. Karapetyan, V. T. Sardaryan, A. P. Krmzyan, “Zadacha na sobstvennye znacheniya dlya samosopryazhennykh poluellilticheskikh operatorov”, Izv. AN RA, 1999, no. 3

[2] S. Agmon, Lectures on Elliptic Boundary Value Problems, D. Van Nostrand Company, Inc., N.-Y., 1965 | MR | Zbl

[3] E. C. Titchmarsh, The theory of functions, Oxford Univ. Press, London, 1939 | MR | Zbl

[4] N. Dunford, J. T. Schwartz, Linear Operators. II, Interscience Publishers, 1963 | MR | Zbl