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. (2019). Vietnam Journal of Catalysis and Adsorption, 8(1), 76-81. https://jca.edu.vn/index.php/jca/article/view/600