Kronbergs, Ē., and M. Šmits. “Biomass Properties for Mechanization of Conditioning Processes”.
ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 26, 2006): 145–149. Accessed April 15, 2025.
https://journals23.rta.lv/index.php/ETR/article/view/2000.