ATHRAA H. MEKKEY; FATIMA H. MAL; SAMAH H. KADHIM. Synthesis and Optical Studies of the 3,4-dimethoxy Benzaldehyde [5-(2-hydroxyphenyl)-1,3,4-oxadiazol-2-yl]Hydrazone Metal Complexes. University of Thi-Qar Journal of Science, v. 7, n. 2, p. 95-100, 7 Dec. 2020.