A. Sheat, M., محمد, I. Mohammed, O., & O. (2012). Synthesis of 1,3,4-Oxadiazole Derivatives from Ethyl-2-Piperidone-3-Carboxylate. Journal of Education and Science (JES), 25(1), 19–25. https://doi.org/10.33899/edusj.2012.58997