Hussein, Nora Amer, et al. “Synthesis of New 1,3,4-Oxadiazole Derivatives from Indomethacin Acid and Evaluation of Their Biological Activity”. Samarra Journal of Pure and Applied Science, vol. 6, no. 2/2, Aug. 2024, pp. 100-9, doi:10.54153/sjpas.2024.v6i2/2.670.