Proof and discussion of the upper‐bound principle for excited‐state wave functions obtained by the linear variation method
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1999 ◽
Vol 119
(2-3)
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pp. 232-255
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2011 ◽
Vol 7
(7)
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pp. 2085-2093
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2009 ◽
Vol 10
(S10)
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pp. 119-134
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2017 ◽
Vol 17
(3)
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pp. 347-361
2019 ◽
Vol 150
(10)
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pp. 104103
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