Z. Yalong, Z. Yanqun, Y. Min, and H. Hongfei, “Mechanical and Swelling Characteristics of Kappa-carrageenin/Poly-N-isopropylacrylamide Blend Hydrogels”, Eurasian Chem.-Technol. J., vol. 4, no. 1, pp. 61–65, Jan. 2002.