@misc{PUB-0036,
  title = {{Special issue: “Upgrading the eLibrary: enhanced information services driven by technology and economics” – Proceedings of the 9th International Bielefeld Conference, 3–5 February 2009, Bielefeld, Germany}},
  editor = {Höppner, M. and Horstmann, W. and Rahmsdorf, S.},
  year = {2009},
  url = {https://www.emerald.com/lht/issue/27/4},
  note = {Höppner, M., Horstmann, W., \& Rahmsdorf, S. (Eds.). (2009). Special issue: “Upgrading the eLibrary: enhanced information services driven by technology and economics” – Proceedings of the 9th International Bielefeld Conference, 3–5 February 2009, Bielefeld, Germany. Library Hi Tech, 27(4).}
}