@incollection{GruhnM2004EBusinessProjekte,
  author = {Volker Gruhn and Martin Mocker},
  title = {e-Business-Projekte: Ein Vorgehensmodell},
  booktitle = {it_trends --- Potenziale der Metropolregion Ruhr},
  pages = {127--133},
  year = {2004},
  publisher = {Projekt Ruhr GmbH},
  note = {Publication status: Published}
}

@article{GruhnMS2002Development,
  author = {Volker Gruhn and Martin Mocker and Lothar Schöpe},
  title = {Development of an electronic commerce portal system using a specific software development process},
  journal = {ACM International Conference Proceeding Series; Vol. 21. Proceedings of the Fortieth International Conference on Tools Pacific: Objects for internet, mobile and embedded applications},
  year = {2002},
  volume = {21},
  pages = {93--101},
  note = {Publication status: Published}
}