On the discrete spectrum of periodic differential operators with a distant perturbation
2019 ◽
Vol 368
(2)
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pp. 799-842
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2004 ◽
Vol 38
(3)
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pp. 217-223
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1972 ◽
Vol 34
(1)
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pp. 195-195
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2007 ◽
Vol 18
(06)
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pp. 857-956
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2011 ◽
Vol 22
(5)
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pp. 751-775
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1965 ◽
Vol 12
(2)
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pp. 187-234
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1978 ◽
Vol 80
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pp. 67-84
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