Zhou, Maile, et al. “Theoretical Analysis and Development of a Mechanism With Punching Device for Transplanting Potted Vegetable Seedlings”. International Journal of Agricultural and Biological Engineering, vol. 13, no. 4, Aug. 2020, pp. 85-92, https://ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/5404.