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 CASDI and (SC)2 size-consistency correction
 
 | `Size-consistent self-consistent configuration interaction from a complete active space`
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 | N. Ben Amor, D. Maynau Chem. Phys.Lett. Volume 286, Issues 3–4, 10 April 1998, Pages 211–220
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 <http://dx.doi.org/doi:10.1016/S0009-2614(98)00104-3>
 
 
 EXSCI (CASDILOC) 
 
 | `Selected excitation for CAS-SDCI calculations`
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 | Bories, B., Maynau, D. and Bonnet, M.-L. (2007), J. Comput. Chem., 28: 632–643.
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 <http//dx.doi.org/doi:10.1002/jcc.20588>