TIUC, Ancuţa Elena, et al. “THERMAL BEHAVIOUR OF POLYURETHANE MATRIX COMPOSITE MATERIALS”. Studia Universitatis Babeș-Bolyai Chemia, vol. 60, no. 2, June 2015, pp. 169-76, https://studia.reviste.ubbcluj.ro/index.php/chemia/article/view/8439.