The canonical partition function for relativistic hadron gases F. Beutler, A. Andronic, P. Braun-Munzinger, K. Redlich and J. Stachel Eur. Phys. J. C, 67 3-4 (2010) 439-444 Published online: 20 April 2010 DOI: 10.1140/epjc/s10052-010-1309-3