Non-numerical determination of the number of bound states in some screened Coulomb potentials
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1991 ◽
Vol 60
(3)
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pp. 850-861
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1991 ◽
Vol 60
(12)
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pp. 4081-4088
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1998 ◽
Vol 31
(4)
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pp. 1329-1339
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2018 ◽
Vol 2
(2)
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pp. 025015
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