@article{JungmittagGrupp1999,
  author    = {Jungmittag, Andre and Grupp, H.},
  title     = {Convergence in global high technology? : a decomposition and specialisation analyis for advanced countries},
  year      = {1999},
  language  = {en}
}
@article{JungmittagBlindGrupp1999,
  author    = {Jungmittag, Andre and Blind, Knut and Grupp, H.},
  title     = {Innovation, standardisation and the long-term production functon : a cointegraton analysis for Germany 1960 - 1996},
  year      = {1999},
  language  = {en}
}