Likit Maneesinthu, Kasem Piluek, Chairerg Sagwansupyakorn, and Benjamas Silayoy. “A study on Seed Set from Crosses between Five Self-Incompatible Chinese Radish Lines”. Agriculture and Natural Resources, vol. 23, no. 1, Mar. 1989, pp. 18-25, https://li01.tci-thaijo.org/index.php/anres/article/view/242276.