SMIDSR0D, Olav, and Kjell Morten VaRUM. “Twenty Years of Chitosan Research in Norway”. Journal of Metals, Materials and Minerals 15, no. 1 (August 19, 2022): 83–88. Accessed July 3, 2024. https://jmmm.material.chula.ac.th/index.php/jmmm/article/view/1484.