Vikram, L., C. Sonia, and B.N. Sivasankar. 2012. “New Nine Coordinated Hydrated Heavier Lanthanide Ethylenediaminetetraacetates Containing Hydrazinium Cation: Molecular Structure of N2H5[Tb(EDTA)(H2O)3]·5H2O and N2H5[Gd(EDTA)(H2O)3]&Middot;5H2O”. Asian Journal of Chemistry 25 (3):1441-46. https://doi.org/10.14233/ajchem.2013.13059A.