Perturbations of elliptic operators on high codimension subsets and the extension theory on an indefinite metric space
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1992 ◽
Vol 92
(3)
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pp. 1032-1037
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1997 ◽
Vol 113
(3)
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pp. 1497-1507
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1978 ◽
Vol 60
(3)
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pp. 892-907
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1978 ◽
Vol 12
(1)
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pp. 70-71
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