Pandey, R.N., et al. “Studies on Pd(0), Pt(0), Rh(I), Ni(II), Co(II) and Zr(IV) Complexes of 4-Amino-3-Hydrazino-5-Mercapto-1,2,4-Triazole ”. Asian Journal of Chemistry, vol. 5, no. 3, Mar. 2010, pp. 639-43, https://asianpubs.org/index.php/ajchem/article/view/24886.