Alam, M. M., Begum, R., Rahman, S. M. M., & Islam, S. M. S. (2011). Synthesis, Spectroscopic and Electrochemical Studies of Mononuclear Fe(II) and Ni(II) Complexes Containing a Macrocyclic Ligand Derived from Pyridine-2,6-dicarboxaldehyde and 1,2-Bis(2-aminoethoxy) Ethane. Journal of Scientific Research, 3(3), 599–607. https://doi.org/10.3329/jsr.v3i3.7231