@article{StapperFranzenReuter2010,
  author    = {Stapper, N. J. and Franzen-Reuter, I.},
  title     = {Looking back on 15 years of research on bioindication with Jan-Peter Frahm in Bonn},
  series = {Bryophyte Diversity and Evolution},
  volume    = {31},
  journal   = {Bryophyte Diversity and Evolution},
  number    = {1},
  pages     = {1 -- 4},
  year      = {2010},
  language  = {en}
}