Raji, Saravanan, et al. “Synthesis and Evaluation of Imidazo[2,1-d][1,2,3,5]tetrazine-4(3H)-One Derivatives As Anticancer and Antimicrobial Agents”. Asian Journal of Chemistry, vol. 27, no. 11, July 2015, pp. 4007-12, doi:10.14233/ajchem.2015.19048.