Cölfen, H. Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;
Cölfen, H., Harding, S. E., & Varum, K. M. (1996). Investigation, using analytical ultracentrifugation, on the effect of the incorporation of the fluorophore 9-anthraldehyde on two chitosans of differing degrees of acetylation. Carbohydrate Polymers, 30, 55-60. doi:10.1016/S0144-8617(96)00042-2.