Chen, Lintao, et al. “Design and Test of Soft-Pot-Tray Automatic Embedding System for Light-Economical Pot Seedling Nursery Machine”. International Journal of Agricultural and Biological Engineering, vol. 13, no. 1, Mar. 2020, pp. 91-100, https://ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/4726.