Mahdi, Monther Faisal, et al. “Synthesis, Characterization and Antibacterial Evaluation of Novel 2-Mercaptobenzothiazole Derivatives Bearing 2-Aminonicotinonitrile Moiety”. European Journal of Chemistry, vol. 7, no. 1, Mar. 2016, pp. 8-13, doi:10.5155/eurjchem.7.1.8-13.1333.