Mohamed, E. E., AbedelKarim, A. T., Elmalik, Y. H., Mohamed, A. E., & Aljahdali, M. S. (2014). Characterization and biological activity studies on some transition metal complexes of thiosemicarbazide derived from 2-picolinic acid hydrazide. European Journal of Chemistry, 5(2), 252–259. https://doi.org/10.5155/eurjchem.5.2.252-259.990