@misc{Frahm2012,
  author    = {Jan-Peter Frahm},
  title     = {Two Centuries of Systematics of Bryophytes - what will bring the Future?},
  booktitle = {120},
  series    = {Archive for Bryology},
  number    = {120},
  type      = {periodicalpart},
  pages     = {16},
  year        = {2012},
}