@misc{Frahm2010,
  author    = {Jan-Peter Frahm},
  title     = {Tortula aestiva (Hedw.) P. Beauv., eine gute Art},
  booktitle = {66},
  series    = {Archive for Bryology},
  number    = {066},
  type      = {periodicalpart},
  pages     = {4},
  year        = {2010},
}