@inproceedings{DBLP:conf/db-workshops/GardarinMS85,
  author    = {Georges Gardarin and
               Christophe de Maindreville and
               Eric Simon},
  title     = {Extending a Relational DBMS Towards a Rule-Based System:
               An Approach Using Predicate Transition Nets},
  booktitle = {Foundations of Knowledge Base Management (Xania)},
  year      = {1985},
  pages     = {131-152},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}