Farhat, Mahmoud. “Synthesis of Some Pyrazole Derivatives from 5-Chloro- and 5-Azido-1,3-Diphenyl-1H-Pyrazole-4-Carbaldehydes”. Jordan Journal of Chemistry (JJC) 15, no. 1 (August 4, 2020): 33-42. Accessed November 27, 2020. http://jjc.yu.edu.jo/index.php/jjc/article/view/174.