@article{Ette2020,
  author    = {Ottmar Ette},
  title     = {Alexander von Humboldt},
  journal   = {Offene Horizonte : Sch{\"a}tze zu Humboldts Reisewegen},
  series    = {life and work in motion},
  pages     = {20 -- 21},
  year      = {2020},
}