Jin, Tong-Shou, Hong Xie, Yu-Peng Xue, and Tong-Shuang Li. “One-Pot Synthesis of Benzochromene Derivatives Catalyzed by KF-Al2O3 With Grinding”. Asian Journal of Chemistry 20, no. 7 (March 30, 2010): 5145–5152. Accessed November 29, 2024. https://asianpubs.org/index.php/ajchem/article/view/12843.