Li, Yang, Hongfeng Ren, and Arthur J. Ragauskas. “Rigid Polyurethane Foam Reinforced With Cellulose Whiskers: Synthesis and Characterization”. Nano-Micro Letters 2, no. 2 (May 13, 2010): 89-94. Accessed May 3, 2024. https://www.nmlett.org/index.php/nml/article/view/110.