@InProceedings{BLM02,
  author =       {R. Berghammer and B. Leoniuk and U. Milanese},
  title =        {Implementation of relational algebra using binary decision diagrams},
  booktitle =    {6th International Conference RelMiCS 2001 and 1st Workshop of COST Action 274 TARSKI, Oisterwijk, The Netherlands, October 16-21},
  pages =        {241-257},
  year =         {2002},
  editor =       {H.C.M. de Swart},
  volume =       {2561},
  series =       {Lecture Notes in Computer Science},
  address =      {Berlin-Heidelberg-New York},
  month =        {December},
  publisher =    {Springer}
}