@inproceedings{DBLP:conf/birthday/EhrigL92,
  author    = {Hartmut Ehrig and
               Michael L{\"o}we},
  title     = {From Parallel to Distributed Derivations of Graphs in the
               Single-Pushout-Approach},
  booktitle = {Informatik zwischen Wissenschaft und Gesellschaft},
  year      = {1992},
  pages     = {47-65},
  crossref  = {DBLP:conf/birthday/1992franck},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/birthday/1992franck,
  editor    = {Hans-J{\"o}rg Kreowski},
  title     = {Informatik zwischen Wissenschaft und Gesellschaft, Zur Erinnerung
               an Reinhold Franck},
  booktitle = {Informatik zwischen Wissenschaft und Gesellschaft},
  publisher = {Springer},
  series    = {Informatik-Fachberichte},
  volume    = {309},
  year      = {1992},
  isbn      = {3-540-55389-4},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}