Saaid, Faiq H., Shatha J. Dawood, and Bushra H. Marbeen. 2018. “Synthesis and Characterization of 1,3,4- Oxadiazole Derivatives Using an Ultrasonic Technique”. Al-Mustansiriyah Journal of Science 29 (2): 101-5. https://doi.org/10.23851/mjs.v29i2.183.