Saaid, F. H., Dawood, S. J., & Marbeen, B. H. (2018). Synthesis and Characterization of 1,3,4- oxadiazole Derivatives using an Ultrasonic Technique. Al-Mustansiriyah Journal of Science, 29(2), 101-105. https://doi.org/10.23851/mjs.v29i2.183