@article{Fischer1993,
  author    = {Eberhard Fischer},
  title     = {Taxonomic results of the Bryotrop expedition to Zaire and Rwanda : 3., description of dollecting sites, the vegetation of Kahuzi-Biega-National Park/Zaire, Nyungwe Forest and Virunga volcanoes/Rwanda},
  journal   = {Tropical bryology},
  number    = {8},
  pages     = {13 -- 37},
  year      = {1993},
}