@article{IUPAC+PT07088+2019, url = {https://doi.org/10.1351/goldbook.PT07088}, institution = {International Union of Pure and Applied Chemistry (IUPAC)}, year = {2019}, title = {Pariser–Parr–Pople (PPP) method}, doi = {doi:10.1351/goldbook.PT07088}, edition = {3.0.1} }