Essential self-adjointness of operators associated with the Cauchy problem for the wave equation
2010 ◽
Vol 51
(12)
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pp. 123504
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2006 ◽
Vol 42
(5)
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pp. 638-649
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1966 ◽
Vol 15
(1)
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pp. 29-32
2020 ◽
Vol 250
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pp. 800-810
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2013 ◽
Vol 10
(04)
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pp. 677-701
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