WEI, Deng; XIONGKUI, He; WEIMIN, Ding. Droplet size and spray pattern characteristics of PWM-based continuously variable spray. International Journal of Agricultural and Biological Engineering, Beijing, China, v. 2, n. 1, p. 8–18, 2009. Disponível em: https://ijabe.org/index.php/ijabe/article/view/54. Acesso em: 1 apr. 2026.