Hu, Zhong-Yuan, Ding Du, Wei-Fang Tang, and Tao Lu. “One-Pot Synthesis of Quinoxalines Starting from Aldehydes Under Metal-Free Conditions”. Asian Journal of Chemistry 24, no. 5 (January 3, 2012): 2262–2264. Accessed July 6, 2024. https://asianpubs.org/index.php/ajchem/article/view/8995.