@article{Krumpel2009,
  author    = {Heinz Krumpel},
  title     = {Identit{\"a}t und Differenz},
  journal   = {Alexander von Humboldt im Netz ; international review for Humboldtian studies},
  series    = {Goethes Faust und Alexander von Humboldt},
  volume    = {VIII},
  number    = {14},
  pages     = {58 -- 72},
  year      = {2009},
}