Wu, Jianping, Yuanhua Wang, Yiqin Wan, Hanwu Lei, Fei Yu, Yuhuan Liu, Paul Chen, Lirong Yang, and Roger Ruan. 2009. “Processing and Properties of Rigid Polyurethane Foams Based on Bio-Oils from Microwave-Assisted Pyrolysis of Corn Stover”. International Journal of Agricultural and Biological Engineering 2 (1):40-50. https://doi.org/10.25165/ijabe.v2i1.81.