@misc{Frahm2006,
  author    = {Jan-Peter Frahm},
  title     = {Ein dritter Nachweis von Trichostomopsis umbrosus (C. M{\"u}ll.) Robins. in Deutschland},
  booktitle = {7},
  series    = {Archive for Bryology},
  number    = {007},
  type      = {periodicalpart},
  pages     = {4},
  year        = {2006},
}