Li, Mutong, et al. “Fracture Mechanism and Separation Conditions of Pineapple Fruit-Stem and Calibration of Physical Characteristic Parameters”. International Journal of Agricultural and Biological Engineering, vol. 16, no. 5, Dec. 2023, pp. 248-59, https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/8079.