@article{PalmerLindemann2003,
  author    = {Palmer, J. W. and Lindemann, Markus},
  title     = {Business models and market mechanisms : evaluating efficiency in consumer electronic markets},
  series = {Data base and advanced information systems. Bd. 34 (2003), H. 2},
  journal   = {Data base and advanced information systems. Bd. 34 (2003), H. 2},
  issn      = {0105-9912},
  pages     = {23 -- 38},
  year      = {2003},
  language  = {en}
}
@article{JanzLoeoefPeters2004,
  author    = {Janz, Norbert and L{\"o}{\"o}f, Hans and Peters, Bettina},
  title     = {Firm Level Innovation and Productivity, Is there a Common Story Across Countries?},
  series = {Problems and Perspectives in Management (2004)},
  journal   = {Problems and Perspectives in Management (2004)},
  isbn      = {ISSN 1727-7051},
  pages     = {184 -- 204},
  year      = {2004},
  language  = {en}
}
@article{Hoepner2004,
  author    = {Hoepner, Gert},
  title     = {Info-Web-Generation},
  series = {Dm-compact : academic news for marketeers / Deutscher Direktmarketing Verband e. V.. 2 (2004), H. 3-4},
  journal   = {Dm-compact : academic news for marketeers / Deutscher Direktmarketing Verband e. V.. 2 (2004), H. 3-4},
  isbn      = {1573-3181},
  pages     = {14 -- 20},
  year      = {2004},
  language  = {en}
}
@book{MackensteinMarsch2005,
  author    = {Mackenstein, Hans and Marsch, Steve},
  title     = {The international relations of the European Union / by Steve Marsh and Hans Mackenstein},
  publisher = {Pearson Education},
  address   = {Harlow [u.a.]},
  isbn      = {0-582-47293-8},
  pages     = {XX, 305 S.},
  year      = {2005},
  language  = {en}
}
@article{Pietsch2005,
  author    = {Pietsch, Wolfram},
  title     = {Customer-Oriented Specification and Evaluation of IT Service Level Agreements},
  series = {Software process improvement : Elektronische Ressource : 12th European conference ; proceedings / EuroSPI 2005, Budapest, Hungary, November 9 - 11, 2005. Ita Richardson ... (ed.)},
  journal   = {Software process improvement : Elektronische Ressource : 12th European conference ; proceedings / EuroSPI 2005, Budapest, Hungary, November 9 - 11, 2005. Ita Richardson ... (ed.)},
  publisher = {Springer},
  address   = {Berlin [u.a.]},
  isbn      = {3-540-30286-7},
  pages     = {83 -- 94},
  year      = {2005},
  language  = {en}
}
@inproceedings{HammerViethMaier2005,
  author    = {Hammer, Andreas and Vieth, Matthias and Maier, Frank},
  title     = {Co-Plot as a new multivariate analysis method for operations management research?},
  series = {Papers of the 12th International EurOMA Conference on Operational and Global Competitiveness, Budapest, Hungary, June 19-22, 2005 / Editor: Krisztina Demeter},
  booktitle = {Papers of the 12th International EurOMA Conference on Operational and Global Competitiveness, Budapest, Hungary, June 19-22, 2005 / Editor: Krisztina Demeter},
  isbn      = {963-218-455-6},
  pages     = {1007 -- 1016},
  year      = {2005},
  language  = {en}
}
@techreport{ViethHammerMaier2005,
  type      = {Working Paper},
  author    = {Vieth, Matthias and Hammer, A. and Maier, F.},
  title     = {A critical analysis of the co-plot method},
  series = {International University in Germany, School of Business Administration / Working paper},
  journal   = {International University in Germany, School of Business Administration / Working paper},
  number    = {32},
  publisher = {School of Business Administration, Intern. Univ. in Germany},
  address   = {Bruchsal},
  pages     = {22 Bl{\"a}tter},
  year      = {2005},
  language  = {en}
}
@inproceedings{KunfermannDrumm2005,
  author    = {Kunfermann, Philipp and Drumm, Christian},
  title     = {Lifting XML schemas to ontologies - the concept finder algorithm},
  series = {MEDIATE 2005 First International Workshop on Mediation in Semantic Web Services Proceedings of the First International Workshop on Mediation in Semantic Web Services (MEDIATE 2005)},
  booktitle = {MEDIATE 2005 First International Workshop on Mediation in Semantic Web Services Proceedings of the First International Workshop on Mediation in Semantic Web Services (MEDIATE 2005)},
  pages     = {113 -- 122},
  year      = {2005},
  language  = {en}
}
@article{FredebeulKreinVogel2006,
  author    = {Fredebeul-Krein, Markus and Vogel, Erika},
  title     = {Underground Storage Facilities in the German natural gas market: A need for access regulation to ensure competition?},
  series = {Zeitschrift f{\"u}r Energiewirtschaft. 30 (2006), H. 4},
  journal   = {Zeitschrift f{\"u}r Energiewirtschaft. 30 (2006), H. 4},
  isbn      = {0343-5377},
  pages     = {257 -- 270},
  year      = {2006},
  language  = {en}
}
@book{JanzGoedhuysMohnen2006,
  author    = {Janz, Norbert and Goedhuys, Micheline and Mohnen, Pierre},
  title     = {What drives productivity in Tanzanian manufacturing firms: technology or institutions? / Goedhuys, Micheline ; Janz, Norbert ; Mohnen, Pierre},
  publisher = {UnU-MERIT},
  address   = {Maastricht},
  pages     = {22 S.},
  year      = {2006},
  language  = {en}
}