Upadhya, Poonam, and Ram Nayan. “Investigation of Multidentate Ligand Complexes With Some Late Transition Metal Ions”. Asian Journal of Chemistry 8, no. 1 (March 30, 2010): 139–150. Accessed April 3, 2025. https://asianpubs.org/index.php/ajchem/article/view/24031.