@InProceedings{PenSchSilWid09,
author =    {P. Penna and F. Schoppmann and R. Silvestri and P. Widmayer},
title =     {Pseudonyms in cost-sharing games},
booktitle = {Proc. of the 5th International Workshop on Internet and Network Economics (WINE)},
year =      {2009},
pages     = {256-267},
series =    {LNCS}
}