MENG, Ruifeng; ZHONG, Jianjun; ZHANG, Lifen; YE, Xingqian; LIU, Donghong. Ultrasonic concentration measurement of citrus pectin aqueous solutions using PC and PLS regression. International Journal of Agricultural and Biological Engineering, [S. l.], v. 5, n. 2, p. 76–81, 2012. Disponível em: https://ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/551. Acesso em: 27 feb. 2026.