Liszkowska, J. “The Effect of Ground Coffee on the Mechanical and Application Properties of Rigid Polyurethane-Polyisocyanurate Foams”. Polimery 63, no. 4 (January 13, 2021): 305-310. Accessed July 22, 2024. https://ichp.vot.pl/index.php/p/article/view/211.