Upadhyay, Shalini, and S.P S. Jadon. “Synthesis and Characterization of the Complex of S4N3Cl With Ni(CH3COO)2.4H2O”. Asian Journal of Chemistry, vol. 15, no. 2, Mar. 2010, pp. 1065-8, https://asianpubs.org/index.php/ajchem/article/view/21747.