Four-nucleon force contribution to the binding energy of 4He A. Nogga, D. Rozpędzik, E. Epelbaum, W. Glöckle, J. Golak, H. Kamada, R. Skibiński and H. Witała EPJ Web of Conferences, 3 (2010) 05006 Published online: 12 April 2010 DOI: 10.1051/epjconf/20100305006