...¹

Discussed are also some further methods that are based on MP5 calculations. We concentrate here on the MP4-based methods.

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... ²

Please note that there are other conventions in the literature to designate such approximants. The exact definition of the approximant used here is given later (Sec.2, Eq.(5)).

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... option)³

The full core data can be obtained conveniently using the CCSD(T,E4T,full) option in Gaussian 94.

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