Shah, A., Khuhawar, M., & Ali Shah, A. (2014). Preparation and Characterization of Poly Metal Complexes Derived from 5,5’-Methylenebis(2-Hydroxy Benzaldehyde) and 6,6’-Methylenebis(2-hydroxy naphthaldehyde) with Hydrazine and 4-Amino Phenyl Ether. Asian Journal of Chemistry, 26(18), 6055–6060. https://doi.org/10.14233/ajchem.2014.16652