Dinkelbach F, Marian CM. Vibronic and spin–orbit coupling effects in the absorption spectra of pyrazine: A quantum chemical approach. J. Serb. Chem. Soc. [Internet]. 2019 Aug. 29 [cited 2024 Apr. 27];84(8):819-36. Available from: https://www.shd-pub.org.rs/index.php/JSCS/article/view/8182