@article{DrenckhahnWeber2020,
  author    = {Detlev Drenckhahn and Heinrich E. Weber},
  title     = {Die Nordfriesische Brombeere, Rubus boreofrisicus Drenckhahn \& H. E. Weber, eine endemische Rubus-Art der Westk{\"u}ste von Schleswig-Holstein, Deutschland},
  journal   = {Forum geobotanicum},
  volume    = {9},
  doi       = {10.3264/FG.2020.0116},
  url       = {http://forum-geobotanicum.net/articles/vol_9-2020/drenckhahn-weber-rubus_boreofrisicus/drenckhahn-weber-rubus_boreofrisicus.pdf},
  year      = {2020},
}