author       = "Hoistad, B. and Calen, H. and Fransson, K. and Gustafsson,
                      L. and Haggstrom, S. and Johansson, A. and Johanson, J. and
                      Johansson, T. and Khoukaz, A. and Kullander, S. and Ruber,
                      R. and Zlomanczuk, J. and Ekstrom, Curt and Bilger, R. and
                      Brodowski, W. and Clement, H. and Wagner, G.J. and Oelert,
                      W. and Sefzick, T. and Greiff, J. and Koch, I. and Scobel,
                      W. and Kupsc, A. and Marciniewski, P. and Stepaniak, J. and
                      Morosov, B. and Povtoreiko, A. and Sukhanov, A. and
                      Zabierowski, J. and Shwartz, B.",
      title        = "Two-pion production in proton proton collisions near
      year         = "2003",