Wortmann93'

@inproceedings{DBLP:conf/ifip5-7/Wortmann93,
  author    = {John C. Wortmann},
  title     = {Enterprise Modelling: Purposes and Means},
  booktitle = {APMS},
  year      = {1993},
  pages     = {613-623},
  crossref  = {DBLP:conf/ifip5-7/1993},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/ifip5-7/1993,
  editor    = {Ioannis A. Pappas and
               Ilias P. Tatsiopoulos},
  title     = {Advances in Production Management Systems, Proceedings of
               the IFIP TC5/WG5.7 Fifth International Conference on Advances
               in Production Management Systems - APMS '93, Athens, Greece,
               28-30 September, 1993},
  booktitle = {APMS},
  publisher = {North-Holland},
  series    = {IFIP Transactions},
  volume    = {B-13},
  year      = {1993},
  isbn      = {0-444-81598-8},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}