@misc{Frahm2005,
  author    = {Jan-Peter Frahm},
  title     = {A guide to bryological hotspots in Europe : [Part 2: The Rur Valley, Eifel Mountains, Germany]},
  booktitle = {4},
  series    = {Archive for Bryology},
  number    = {004},
  type      = {periodicalpart},
  pages     = {15 -- 21},
  year        = {2005},
}