Sulaeva, Luisa, Markus Füssl, and Johanna Zhang. “Preparation and Performance Study of Drug-Loaded Film Materials Enhanced by Modified Cellulose Nanocrystals and Keratin”. Journal of Green Energy and Environmental Engineering 2, no. 1 (January 1, 2025): 4: 32–43. Accessed March 29, 2026. http://www.wpias.edu.pl/ojs/index.php/JGEEE/article/view/78.