Sangeetha, J.E., S. Meenalochani, K. Radha, and D. Chellappa. “Synthesis and Characterization of Transition Metal Complexes of 12- and 14-Membered Tetraaza Macrocycles”. Asian Journal of Chemistry 20, no. 6 (March 30, 2010): 4749–4754. Accessed November 29, 2024. https://asianpubs.org/index.php/ajchem/article/view/19090.