Osarodion, O. P., E. M. Orile, and U. C. Odianosen. “Electron Impact Ionization Mass Spectra of 3-Amino 5,6-Dimethoxyl-2-Methyl Quinazolin-4-(3H)-One Derivative”. European Journal of Scientific Exploration, vol. 2, no. 2, July 2019, https://syniutajournals.com/index.php/EJSE/article/view/66.