On the usefulness of approximate exchang
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L. Piela
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Article
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1970
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Elsevier Science
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English
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The usefulness of Mulliken nnd Motagn-Kishimoto npproximntions in perrurbntionnl cnlculntions is investigxted. The calculntions are carried out for the hydrogen molecule in its ground and first excited states by n method similar to the Janson-Byors Brown method.