References
- Agranovich , M.S. 1994 . “ Elliptic operators on closed manifolds ” . In Encyclopeadia of Mathematical Sciences , Vol. 63 , 1 – 130 . Berlin : Springer .
- Agranovich , M.S. 1996 . “ Elliptic boundary problems ” . In Encyclopeadia of Mathematical Sciences , Vol. 79 , 1 – 144 . Berlin : Springer .
- Agranovich , Denk , R. and Faierman , M. 1997 . Weakly smooth non-self adjoint spectral elliptic boundary problems , Preprint .
- Agranovich , M.S. and Markus , A.S. 1989 . On spectral properties of elliptic pseudodifferential operators far from selfadjoint ones . Z. Anal. Anwendungen , 8 : 237 – 260 .
- Beals , R. 1970 . Asymptotic behaviour of the Green's function and spectral function of an elliptic operator . J. Funct. Anal , 5 : 484 – 503 .
- Browder , F.E. 1965 . Asymptotic distribution of eigenvalues and eigenfunctions for non-local elliptic boundary value problems . Amer. J. Math , 87 : 175 – 195 .
- Faierman , M. 1995 . On the eigenvalue asymptotic for a non-selfadjoint elliptic problem involving an indefinite weight . Proc. Roy. Soc. Edinburgh, Sect , A 125 : 859 – 875 .
- Geymonat , G. 1965 . Sui alcuni problemi at limiti per i sistemi lineari ellittici secondo Petrowsky . Matematiche (Catania) , 20 : 211 – 253 .
- Grubb , G. 1996 . “ Functional calculus of pseudo-differential boundary problems ” . In Progress in Mathematics , Vol. 65 , Birkhauser .
- Krasnosel'skii M.A. Zabreiko P.P. Pustylnik E.L. Sobolevskii P.E. Integral Operators in Spaces of Summable Functions (In Russian). Moscow: Nauka 1966 (Russian) 1976 (English transl.: Leyden: Noordhoff)
- Mizohata , S. 1965 . Sur Its proprietes aymptotiques des valeurs propres pour les equations elliptiques . J. Math. Kyoto Univ , 4 : 399 – 428 .
- Nicaise , S. 1993 . “ Polygonal interface problems. Series ” . In “Methoden und Verfahren der Mathematischen Physik” , Vol. 39 , Peter Lang Verlag .
- Roitberg , Ya.A. and Sheftel , Z.G. 1969 . A theorem on homeomorphisms for elliptic systems and applications . Math. USSR Sbornik , 7 : 439 – 465 .
- Sango , M. 1997 . A spectral problem with an indefinite weight for an elliptic system . Elec. J. Diff. Eq , 21 : 1 – 14 .
- Sango , M. 1998 . Completeness of root vectors for a Douglis-Nirenberg elliptic problem with an indefinite weight in Lp spaces . C.R. Acad. Sci. Paris Serie I , 326 : 703 – 708 .
- Tanabe , H. 1997 . Functional Analytic Methods for Partial Differential Equations , New-York : Marcel Dekker .