Juostas, Antanas, and Algirdas Janulevičius. “Tractor’s Engine Efficiency and Exhaust emissions’ Research in Drilling Work”. Journal of Environmental Engineering and Landscape Management 22, no. 2 (June 20, 2014): 141–150. Accessed November 26, 2024. https://transport.vgtu.lt/index.php/JEELM/article/view/1439.