ABDULLAH, H . M .. Hard and Tough Epoxy Resins Modified with Thermosetting Materials. Ibn AL- Haitham Journal For Pure and Applied Science, [S.l.], v. 18, n. 3, p. 78-88, june 2019. ISSN 2521-3407. Available at: <http://jih.uobaghdad.edu.iq/index.php/j/article/view/2225>. Date accessed: 26 aug. 2019.