LockemannW93'

@inproceedings{DBLP:conf/rules/LockemannW93,
  author    = {Peter C. Lockemann and
               Hans-Dirk Walter},
  title     = {Activities in Object Bases},
  booktitle = {Rules in Database Systems},
  year      = {1993},
  pages     = {1-22},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}