Yesilkaynak, Tuncay, et al. “Theoretical and Experimental Studies on N-(6-Methylpyridin-2-Yl-carbamothioyl)biphenyl-4-Carboxamide”. European Journal of Chemistry, vol. 1, no. 1, Mar. 2010, pp. 1-5, doi:10.5155/eurjchem.1.1.1-5.3.