@article{Werner2010,
  author    = {Petra Werner},
  title     = {Zum Verh{\"a}ltnis Charles Darwins zu Alexander v. Humboldt und Christian Gottfried Ehrenberg},
  journal   = {Alexander von Humboldt im Netz ; international review for Humboldtian studies},
  volume    = {X},
  number    = {18},
  pages     = {68 -- 95},
  year      = {2010},
}