M. Ibrahim, Mohammad, Mahmoud Al-Refai, Jamal N. Dawoud, Rajab Abu-El-Halawa, Mohannad H. Massad, Zaher Judeh, and Basem F. Ali. “Crystal Structure and Density Functional Calculation of (E)-4-Hydroxy-3-Methyl-N’- (thiophen-2-Ylmethylene)-1,4-Dihydroquinoxaline-2-Carbohydrazide Radical”. Asian Journal of Chemistry 24, no. 7 (March 12, 2012): 2926–2930. Accessed July 22, 2024. https://asianpubs.org/index.php/ajchem/article/view/9263.