Kumar, Brajesh, S.K. Sangal, and Arun Kumar. 2010. “Physico-Chemical Studies of Cobalt(II) Complexes Derived from 2-Substituted Benzaldehyde Semicarbazones and Thiosemicarbazones”. Asian Journal of Chemistry 18 (4):3106-10. https://asianpubs.org/index.php/ajchem/article/view/20761.