“Development of bimetallic catalyst system (Pd and Cu) for the synthesis of 8-methyl-5-aryl-5H-pyrido[2’,1’:2,3]imidazo[4,5-b]indoles”, Vietnam j. catal. adsorp., vol. 8, no. 1, pp. 76–81, Apr. 2019, Accessed: Aug. 21, 2025. [Online]. Available: https://jca.edu.vn/index.php/jca/article/view/600