Spectral inclusion and spectral exactness for singular non-self-adjoint Sturm-Liouville problems
2001 ◽
Vol 457
(2005)
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pp. 117-139
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2004 ◽
Vol 24
(1)
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pp. 21-43
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2003 ◽
Vol 459
(2036)
◽
pp. 1987-2009
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2006 ◽
Vol 11
(1)
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pp. 47-78
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2014 ◽
Vol 19
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pp. 301-334
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2004 ◽
Vol 41
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pp. 347-378
2018 ◽
Vol 58
(11)
◽
pp. 1780-1793