The essential spectrum of Neumann Laplacians on some bounded singular domains
1991 ◽
Vol 102
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pp. 448-483
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2020 ◽
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pp. 145-148
2019 ◽
Vol 357
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2005 ◽
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2008 ◽
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2004 ◽
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2003 ◽
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1971 ◽
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