M. ALI, H.; A. RASOOL, R.; Y. MOUSTAFA, S. Reinforcement Effect of Alumina and Silica on the Mechanical Properties of Mixture Polyesters (Unsaturated Polyester / Polyurethane). Rafidain Journal of Science, [S. l.], v. 29, n. 2, p. 51–63, 2020. DOI: 10.33899/rjs.2020.165365. Disponível em: https://edusj.uomosul.edu.iq/index.php/rsci/article/view/47350. Acesso em: 10 sep. 2025.