XU, Yang; XUE, Xinyu; SUN, Zhu; GU, Wei. Non-intrusive flowrate measurement and monitoring system of plant-protection unmanned aircraft systems based on pump voice analysis. International Journal of Agricultural and Biological Engineering, [S. l.], v. 14, n. 3, p. 58–65, 2021. DOI: 10.25165/ijabe.v14i3.5508. Disponível em: https://ijabe.org/index.php/ijabe/article/view/5508. Acesso em: 27 jan. 2026.