State-universal coupled cluster

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State-universal coupled cluster (SUCC) method is one of several multi-reference

coupled-cluster (MR) generalizations of single-reference coupled cluster method. It was first formulated by Bogumił Jeziorski and Hendrik Monkhorst in their work published in Physical Review A
in 1981. State-universal coupled cluster is often abbreviated as SUMR-CC or MR-SUCC.

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