QCD and strongly coupled gauge theories: challenges and perspectives N. Brambilla, S. Eidelman, P. Foka, S. Gardner, A. S. Kronfeld, M. G. Alford, R. Alkofer, M. Butenschoen, T. D. Cohen, J. Erdmenger et al. (40 more) Eur. Phys. J. C, 74 10 (2014) 2981 Published online: 21 October 2014 DOI: 10.1140/epjc/s10052-014-2981-5