HUANG, JIN-ZHAO, SHI-SHUAI LI, XIU-PENG FENG, PEI-JI WANG, and ZHONG ZHANG. 2010. “Study on Formation Cross-Section of Singlet and Triplet Exciton in Organic Phosphorescent and Fluorescent Material”. Asian Journal of Chemistry 22 (6):4697-4702. https://asianpubs.org/index.php/ajchem/article/view/16777.