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On the reflection symmetries of atoms and diatomic molecules: derivation of Σ⁺ and Σ⁻ states in terms of the united atom and electron configuration

Koichiro Yamakawa and Katsuyuki Fukutani

Eur. Phys. J. D, 69 7 (2015) 175

DOI: https://doi.org/10.1140/epjd/e2015-60142-4

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