Ahmad, M. (2023) “Synthesis, Characterization and Evaluation of Some Pyranopyrazoles and Pyranopyrimidines Derivatives as Antioxidants for Lubricating Oils”, Iraqi Journal of Science, 55(1), pp. 1–11. Available at: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/11919 (Accessed: 5 December 2025).