Ambwani, Jitendra, N.L. Bansal, and Mamta Rani Sharma. 2010. “Synthesis and Structural Studies of Some Macrocyclic Complexes of Ni(II) of Bioinorganic Relevance”. Asian Journal of Chemistry 13 (2):491-95. https://asianpubs.org/index.php/ajchem/article/view/22617.