Synthesis, Characterization and Evaluation of Some Pyranopyrazoles and Pyranopyrimidines Derivatives as Antioxidants for Lubricating Oils. Iraqi Journal of Science, [S. l.], v. 55, n. 1, p. 1–11, 2023. Disponível em: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/11919.. Acesso em: 31 mar. 2025.