@book{JanzGottschalkHempelletal.2005,
  author    = {Norbert Janz and Sandra Gottschalk and Thomas Hempell and Bettina Peters},
  title     = {Innovation Activities in the German Economy. Report on Indicators from the Innovation Survey 2000 (English translation) / Janz, N., S. Gottschalk, T. Hempell, B. Peters, G. Ebling und H. Niggemann},
  year      = {2005},
}