φ production in In–In collisions at 158 A GeV The NA60 Collaboration, R. Arnaldi, K. Banicz, K. Borer, J. Castor, B. Chaurand, W. Chen, C. Cicalò, A. Colla, P. Cortese et al. (44 more) Eur. Phys. J. C, 64 1 (2009) 1-18 Published online: 19 September 2009 DOI: 10.1140/epjc/s10052-009-1137-5