@misc{Frahm2010,
  author    = {Jan-Peter Frahm},
  title     = {Die Liassandsteinfelsen der S{\"u}deifel},
  booktitle = {68},
  series    = {Archive for Bryology},
  number    = {068},
  type      = {periodicalpart},
  pages     = {5},
  year        = {2010},
}