Jittanoonta, P., Y. Cuptapun, D. Hengsawadi, J. Limpanussorn, P. Klungsub, S. Poungshompoo, J. Boonsom, and S. Ingthamajit. “Food Safety on Utilization of Solar-dried Thai Spirulina”. Agriculture and Natural Resources, vol. 33, no. 2, June 1999, pp. 277-83, https://li01.tci-thaijo.org/index.php/anres/article/view/240492.