@InProceedings{wildcards04,
  author =       {Mads Torgersen and Christian Plesner Hansen
                  and Erik Ernst and Peter vod der Ah{\'e}
                  and Gilad Bracha and Neal Gafter},
  title =        {Adding Wildcards to the {Java} Programming Language},
  booktitle =    {Proceedings {SAC'04}},
  editor =       {H.M. Haddad and G.A. Papadopoulos and A. Omicini
                  and R.L. Wainwright and L.M. Liebrock and M.J. Palakal 
                  and A. Andreou and C. Pattichis},
  year =         2004,
  publisher =    {ACM Press},
  address =      {Nicosia, Cyprus},
  month =        mar,
  pages =        {1289--1296}
}