T. S. AL-Sayd Toohi, Homam, and Zaid S. Ahmed. “Developing a New Method for Calculating the Octane Number Based on Quantum Mechanics Methods”. College of Basic Education Research Journal 19, no. 1 (March 1, 2023): 835–843. Accessed October 26, 2025. https://edusj.uomosul.edu.iq/index.php/berj/article/view/39664.