Yahyazadeh, Asieh. “Synthesis of 7-Aryl-3H-[1,2,4]triazolo[3,1-i]purines from 1-Amino-9-Aryl-6-Iminopurines”. Asian Journal of Chemistry, vol. 17, no. 2, Jan. 2016, pp. 1349-51, https://asianpubs.org/index.php/ajchem/article/view/14243.