@article{IUPAC+Z06744+2025, url = {https://doi.org/10.1351/goldbook.Z06744}, institution = {International Union of Pure and Applied Chemistry (IUPAC)}, year = {2025}, title = {zero–zero (0–0) absorption or emission}, doi = {doi:10.1351/goldbook.Z06744}, edition = {5.0.0} }