1. G. W. Rigby, Deacetylated Chitin and Processes for Same, U.S. 2, 040,879 and U.S. 2,040,880 ( 1936 ); R. A. A. Muzzarelli, “Chitin,” Pergamon Press, London (1977).
2. E. R. Hayes, D. H. Davies and V. G. Munroe, Organic solvent systems for chitosan, in: “Proceedings of the First International Conference on Chitin/Chitosan,” R. A. A. Muzzarelli and E. R. Pariser, eds., M.I,T, Sea Grant Report MITSG 78 - 7, Cambridge (1978).
3. P. Gross, E. Konrad and H. Mager, Chitosan as a natural film forming ingredient, in: “Chitin and Chitosan, Proceedings of the Second International Conference on Chitin and Chitosan,” S. Hirano and S. Tokura, eds., The Japanese Society of Chitin and Chitosan (1982), Tottori, Japan.
4. E. R. Hayes, Characterization of chitosan, in: “Proceedings of the First International Conference on Chitin/Chitosan,” R. A. A. Muzzarelli and E. R. Pariser, eds, M.I.T. Sea Grant Report MITSG 78 - 7, Cambridge (1978).
5. M. Sugano, T. Fujikawa, Y. Hiratsuji, K. Fukuda and Y. Hasegawa, A novel use of chitosan as a hypocholesterolemic agent in rats, Am. J. Clin. Nut. 33: 787 (1980).