T. Vreven, B. Mennucci, C. O. da Silva, K. Morokuma, and J. Tomasi, “The ONIOM-PCM method: Combining the hybrid molecular orbital method and the polarizable continuum model for solvation. Application to the geometry and properties of a merocyanine in solution,” J. Chem. Phys., 115 (2001) 62-72. DOI: 10.1063/1.1376127
