Spectral properties of weighted non selfadjoint elliptic differential operators
2007 ◽
Vol 2
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pp. 813-824
1998 ◽
Vol 58
(2)
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pp. 213-221
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1994 ◽
Vol 74
(1)
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pp. 107-128
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1999 ◽
Vol 6
(2)
◽
pp. 207-225
◽
2015 ◽
Vol 68
(3-4)
◽
pp. 501-518
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