S, R., O. M, and K. P. “Thermomechanical Properties of KevlarTM Reinforced Benzoxazine-Urethane Alloys”. ASEAN Journal of Chemical Engineering, Vol. 13, no. 1, Dec. 2013, pp. 11-17, https://dev.journal.ugm.ac.id/v3/AJChE/article/view/8136.