@inproceedings{DBLP:conf/ifm/BoltonD00,
  title = "Activity Graphs and Processes",
  author = "Christie Bolton and Jim Davies",
  year = "2000",
  crossref = "DBLP:conf/ifm/2000",
  pages = "77-96",
  url = "http://link.springer.de/link/service/series/0558/bibs/1945/19450077.htm",
}