Chatwachirawong, P., O. Boonseng, and A. Summatraya. “The Effect of Genotypes and GE Interaction on Starch Content of Cassava”. Agriculture and Natural Resources, vol. 33, no. 2, June 1999, pp. 171-7, https://li01.tci-thaijo.org/index.php/anres/article/view/240475.