A. Mohammad, Manal, and Shatha A. Gawad. 2018. “Electronic Structure, Thermodynamics Functions and Physical Properties and Charges Study for Derivatives Ring 4-(1,3,4-Thiadiazol-2- yl)benzene-1,3-Diols by Using Ab Intio calculations(RHF Method)”. Al-Qadisiyah Journal of Pure Science 20 (3), 139 -48. https://journalsc.qu.edu.iq/index.php/JOPS/article/view/842.