@article{IUPAC+CT07344+2019,
url = {https://doi.org/10.1351/goldbook.CT07344},
institution = {International Union of Pure and Applied Chemistry (IUPAC)},
year = {2019},
title = {complete active space self-consistent field second-order perturbation theory},
doi = {doi:10.1351/goldbook.CT07344},
edition = {3.0.1}
}