@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{JanzEblingGottschalketal.2002,
  author    = {Janz, Norbert and Ebling, G{\"u}nther and Gottschalk, Sandra and Peters, Bettina},
  title     = {Die Mannheimer Innovationspanels / Janz, N., G. Ebling, S. Gottschalk und B. Peters},
  series = {Allgemeines Statistisches Archiv. 86 (2002)},
  journal   = {Allgemeines Statistisches Archiv. 86 (2002)},
  isbn      = {0002-6018},
  pages     = {189 -- 202},
  year      = {2002},
  language  = {de}
}