Yanyun, Jin, Gao Wanlin, Zhang Han, An Dong, Guo Sihan, Saeed Iftikhar Ahmed, and Liu Yunling. 2016. “Identification of Damaged Corn Seeds Using Air-Coupled Ultrasound”. International Journal of Agricultural and Biological Engineering 9 (1):63-70. https://ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/1880.