Rajendran, S.P., and P. Shanmugam. 2010. “Mass Spectral Fragmentation Pattern of 2,3-Dihydrothieno-[2,3-B] Quinoline-S-Oxide and Its Benzo(h)Derivative Upon Electron Impact”. Asian Journal of Chemistry 14 (3):1616-20. https://asianpubs.org/index.php/ajchem/article/view/22448.