Shujuan, Yi, Liu Yongfen, Wang Chun, Tao Guixiang, Liu Haiyan, and Wang Ruihan. 2014. “Experimental Study on the Performance of Bowl-Tray Rice Precision Seeder”. International Journal of Agricultural and Biological Engineering 7 (1). Beijing, China:17-25. https://ijabe.org/index.php/ijabe/article/view/866.