1. W.F. Reynolds (Ed.), Dry Strength Additives, Tappi Press, 1980 (Chapters 3, 4 and 6).
2. S.M. Hudson, C. Smith, in: D. L. Kaplan (Ed.), Biopolymers from Renewable Resources, Springer-Verlag Berlin, Heidelberg, 1998 (Chapter 4).
3. R.A.A. Muzzarelli, MIT Sea Grant Rep., MITSG1978, MITSG78-7, in: Proceedings of the 1st International Conference on Chitin/Chitosan, 1977, PB285 640, pp. 1–3.
4. Wet-web strength increase by chitosan