Phase synchronization in railway timetables C. Fretter, L. Krumov, K. Weihe, M. Müller-Hannemann and M.-T. Hütt Eur. Phys. J. B, 77 2 (2010) 281-289 Published online: 11 August 2010 DOI: 10.1140/epjb/e2010-00234-y