1969
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Phys. Rev. 185 (2), 624-629 (1969).
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Int. J. Quantum Chem. 4 (S3b), 707-714 (1969).
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Int. J. Quantum Chem. 4 (S3b), 689-696 (1969).
‡Undergraduate Student Author
†Graduate Student Author
‡Undergraduate Student Author
†Graduate Student Author