5Pranee Lertsutthiwong. Chitosan as a dry strength agent forpaper[J]. Appita Journal, 2002, 55(3)= 10-12.
6A. M. A. Nada, Mohamed El--Sakhawy, Samir Kamel, et al. Mechanical and electrical properties of paper sheets treated with ehitosan and its derivatives Caibohydrate Polymers, 2006: 113-121.
