JUOSTAS, Antanas; JANULEVIČIUS, Algirdas. Tractor’s engine efficiency and exhaust emissions’ research in drilling work. Journal of Environmental Engineering and Landscape Management, [S. l.], v. 22, n. 2, p. 141–150, 2014. DOI: 10.3846/16486897.2013.852556. Disponível em: https://journals.vilniustech.lt/index.php/JEELM/article/view/1439. Acesso em: 2 jun. 2025.