Pigožnis, Kārlis, and Edmunds Teirumnieks. 2017. “CARBON FIBER AND PLANT FIBER COMPOSITE TECHNOLOGY DEVELOPMENT IN HIGH STRENGH PARTS”. HUMAN. ENVIRONMENT. TECHNOLOGIES. Proceedings of the Students International Scientific and Practical Conference, no. 21 (April): 176-79. https://doi.org/10.17770/het2017.21.3556.