@misc{FrahmErler2009,
  author    = {Jan-Peter Frahm and David Erler},
  title     = {Orientierende Untersuchungen zur Wirkung der Staubimpr{\"a}gnierung von Borken auf epiphytische Flechten},
  booktitle = {Archive for lichenology ; 4},
  issn      = {1868-4173},
  series    = {Archive for lichenology},
  number    = {4},
  type      = {workingpaper},
  pages     = {7},
  year        = {2009},
}