Relativistic Coulomb problem: lowest-lying energy levels at the critical coupling constant analytically
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2019 ◽
Vol 127
(1)
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pp. 10005
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1994 ◽
pp. 222-268
2018 ◽
Vol 47
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pp. 1860095
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1996 ◽
Vol 03
(01)
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pp. 489-492
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1989 ◽
Vol 80
(1)
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pp. 697-702
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