DING, Chengqiao; WANG, Dachen; FENG, Zhe; CUI, Di. Detection of apple firmness with a novel loudspeaker-based excitation device. International Journal of Agricultural and Biological Engineering, [S. l.], v. 15, n. 1, p. 260–266, 2022. DOI: 10.25165/ijabe.v15i1.7028. Disponível em: https://ijabe.org/index.php/ijabe/article/view/7028. Acesso em: 27 jan. 2026.