Cölfen, H., Harding, S. E., Varum, K. M., & Winzor, D. J. (1996). A study by analytical ultracentrifugation on the interaction between lysozyme and extensively deacetylated chitin (chitosan). Carbohydrate Polymers, 30, 45-53. doi:10.1016/S0144-8617(96)00045-8.