Asymptotic and numeric study of eigenvalues of the double confluent Heun equation
1998 ◽
Vol 31
(42)
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pp. 8521-8531
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1994 ◽
Vol 1
(3)
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pp. 348-370
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2015 ◽
Vol 182
(3)
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pp. 329-355
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2018 ◽
Vol 25
(3)
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pp. 323-349
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2019 ◽
Vol 201
(1)
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pp. 1426-1441
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