@InProceedings{ernst01c,
  author =       {Erik Ernst},
  title =        {Loosely Coupled Class Families},
  crossref =     {ASOCWS01},
}

@Proceedings{ASOCWS01,
  title =        {Position papers from the workshop on
                  Advanced Separation of Concerns, ECOOP'01},
  year =         2001,
  editor =       {Lodewijk Bergmans and Johan Brichau
                  and Siobh{\'a}n Clarke and Maurice Glandrup},
  note =         {Electronic form, 
                 (\url{http://trese.cs.utwente.nl/Workshops/ecoop01asoc/newpage11.htm})}
}