Spychaj, T., M. Zdanowicz, J. Kujawa, and B. Schmidt. “Carboxymethyl Starch With High Degree of Substitution: Synthesis, Properties and Application”. Polimery, vol. 58, no. 7-8, Aug. 2013, pp. 503-11, http://ichp.vot.pl/index.php/p/article/view/756.