Active Brownian Particles - From Individual to Collective Stochastic Dynamics P. Romanczuk, M. Bär, W. Ebeling, B. Lindner and L. Schimansky-Geier Eur. Phys. J. Special Topics, 202 (2012) 1-162 Published online: 30 March 2012 DOI: 10.1140/epjst/e2012-01529-y