@article{IUPAC+CT07344+2025, url = {https://doi.org/10.1351/goldbook.CT07344}, institution = {International Union of Pure and Applied Chemistry (IUPAC)}, year = {2025}, title = {complete active space self-consistent field second-order perturbation theory}, doi = {doi:10.1351/goldbook.CT07344}, edition = {5.0.0} }