Król, P., and P. Chmielarz. “Controlled Radical Polymerization (CRP) Methods in the Synthesis of Polyurethane Copolymers”. Polimery 56, no. 7-8 (August 30, 2011): 530-540. Accessed April 24, 2024. https://ichp.vot.pl/index.php/p/article/view/942.