Study the Mechanical Behavior for Unsaturated Polyester Resin and Polystyrene. Journal of Engineering and Sustainable Development, [S. l.], v. 18, n. 5, p. Ar 1–12, 2014. Disponível em: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/943.. Acesso em: 18 may. 2024.