“Synthesis and Characterization of Some New 2,5-Disubstituted- 1,3,4-Oxadiazole Derivatives Containing Antipyrine Moiety”. Journal of Zankoy Sulaimani - Part A, vol. 18, no. 2, June 2016, pp. 11-26, https://doi.org/10.17656/jzs.10501.