Cölfen, H. Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;
Cölfen, H. (1997). Characterization of polymers and particles with the analytical ultracentrifuge. In R. A. Lessard, & H. Franke (Eds.), Materials characterization and optical probe techniques: A critical review (pp. 525-552). Bellingham: SPIE.