Ali Hussein Mohammed Alwan, “Synthesis and spectroscopic characterization of the new ligand 2-phenyl-5-[(2E)-2-(thiophen-2- ylmethylidene)hydrazinyl]-1,3,4-oxadiazole and its complexes with cobalt[II] and nickel[II]”, Open her. period. Methodical. res., vol. 3, no. 03, pp. 33–41, Mar. 2025.