@article{3068,
  author       = {{Gries, Thomas and Hentschel, C. and Wigger, B.}},
  journal      = {{Jahrbücher für Nationalökonomie und Statistik}},
  pages        = {{64--84}},
  title        = {{{Endogenous Growth and R&D Models - A Critical Appraisal of Recent Developments}}},
  volume       = {{213/1}},
  year         = {{1994}},
}