El-Asmy, A.A.-E. et al. 2016. Synthesis and characterization of tri- and tetra-metallic complexes of N’1,N’4-bis((E)-3,4-dihydroxybenzylidene)-succinohydrazide. European Journal of Chemistry. 7, 1 (Mar. 2016), 81–90. DOI:https://doi.org/10.5155/eurjchem.7.1.81-90.1356.