author       = "Skorodko, T. and Bashkanov, M. and Bogoslavsky, D. and
                      Calen, H. and Cappellaro, F. and Clement, H. and Demirors,
                      L. and Ekstrom, C. and Fransson, K. and Greiff, J. and
                      Gustafsson, L. and Hoistad, B. and Ivanov, G. and Jacewicz,
                      M. and Jiganov, E. and Johansson, T. and Kaskulov, M.M. and
                      Keleta, S. and Khakimova, O. and Koch, I. and Kren, F. and
                      Kullander, S. and Kupsc, A. and Kuznetsov, A. and
                      Marciniewski, P. and Meier, R. and Morosov, B. and Oelert,
                      W. and Pauly, C. and Petukhov, Y. and Povtoreiko, A. and
                      Ruber, R.J. and Schwick, A. and Scobel, W. and Shafigullin,
                      R. and Shwartz, B. and Sopov, V. and Stepaniak, J. and
                      Chernyshev, V. and Thorngren-Engblom, P. and Tikhomirov, V.
                      and Turowiecki, A. and Wagner, G.J. and Wolke, M. and
                      Yamamoto, A. and Zabierowski, J. and Zlomanczuk, J.",
      title        = "pi pi production in proton proton collisions",
      year         = "2007",