Band structure and many body effects in graphene A. Bostwick, T. Ohta, J. L. McChesney, T. Seyller, K. Horn and E. Rotenberg Eur. Phys. J. Special Topics, 148 (2007) 5-13 Published online: 25 September 2007 DOI: 10.1140/epjst/e2007-00220-x