Bhaskar, C.S., and B.N. Berad. “New Route to the Synthesis of 2-Phenylimino-3-Γ-Picolinoyl-5- Aryl Alkylimino 1,3,4-Thiadiazolidines ”. Asian Journal of Chemistry, vol. 14, no. 2, Mar. 2010, pp. 679-82, https://asianpubs.org/index.php/ajchem/article/view/22136.