Bogale Zemede, Y. et al. 2015. Synthesis, Characterization and Antimicrobial Properties of Some Transition Metal Complexes with NS-Chelating Schiff Base Ligand Incorporating Thiophene and Sulfonamide Moieties. Asian Journal of Chemistry. 27, 3 (Jan. 2015), 941–948. DOI:https://doi.org/10.14233/ajchem.2015.17627.