Pornchai Rachtanapun. “Blended Films of Carboxymethyl Cellulose from Papaya Peel (CMCp) and Corn Starch”. Agriculture and Natural Resources, vol. 43, no. 5, Dec. 2009, pp. 259-66, https://li01.tci-thaijo.org/index.php/anres/article/view/244827.