@misc{Kummer2000,
  author    = {Kummer, Volker},
  title     = {Litterski, B., Pflanzengeographische und {\"o}kologische Bewertung der Flechtenflora Mecklenburg-Vorpommerns; Berlin, Cramer, 1999},
  year      = {2000},
  language  = {de}
}
@article{Kummer2000,
  author    = {Kummer, Volker},
  title     = {Botanisch Bemerkenswertes aus der Potsdamer Umgebung : eine Auswahl},
  year      = {2000},
  language  = {de}
}
@article{Kummer2000,
  author    = {Kummer, Volker},
  title     = {Ein kurzer Einblick in die Vielfalt unserer heimischen Pilze II},
  year      = {2000},
  language  = {de}
}
@article{KuehlingBorkKummer2000,
  author    = {K{\"u}hling, Matthias and Bork, Hans-Rudolf and Kummer, Volker},
  title     = {Die W{\"u}ste Atacama},
  year      = {2000},
  language  = {de}
}
@article{OtteRaetzelSipmanetal.2000,
  author    = {Otte, Volker and R{\"a}tzel, Stefan and Sipman, Harri J. M. and Kummer, Volker},
  title     = {Bemerkenswerte Flechtenfunde aus Brandenburg V},
  year      = {2000},
  language  = {de}
}
@article{Kummer2000,
  author    = {Kummer, Volker},
  title     = {Notizen zur Pilzflora des L{\"u}bbener " Hains"},
  year      = {2000},
  language  = {de}
}
@book{KuehlingKummer1999,
  author    = {K{\"u}hling, Matthias and Kummer, Volker},
  title     = {Bemerkenswerte Flechtenfunde aus Brandenburg IV},
  year      = {1999},
  language  = {de}
}
@article{Kummer1999,
  author    = {Kummer, Volker},
  title     = {Beitrag zur Pilzflora des Neuzeller Fasanenwaldes},
  year      = {1999},
  language  = {de}
}
@article{Kummer1999,
  author    = {Kummer, Volker},
  title     = {Von Anemone bis Zimbelkraut},
  year      = {1999},
  language  = {de}
}
@article{KuehlingKummer1999,
  author    = {K{\"u}hling, Matthias and Kummer, Volker},
  title     = {Im Land der Araukarier},
  year      = {1999},
  language  = {de}
}
@article{Kummer1999,
  author    = {Kummer, Volker},
  title     = {Bemerkenswerte Lamellenpilzfunde aus Brandenburg},
  year      = {1999},
  language  = {de}
}
@article{BruyunLitterskiKummer1999,
  author    = {Bruyun, U. and Litterski, B. and Kummer, Volker},
  title     = {Bemerkenswerte Funde lichenisierter und lichenicoler Pilze in Mecklenburg-Vorpommern},
  year      = {1999},
  language  = {de}
}
@article{RistowHerrmannIlligetal.2006,
  author    = {Ristow, Michael and Herrmann, Andreas and Illig, Hubert and Klemm, Gunther and Kummer, Volker and Kl{\"a}ge, Hans-Christian and Machatzi, Bernd and Raetzel, Stefan and Schwarz, R. and Zimmermann, Friedrich},
  title     = {Liste und Rote Liste der etablierten Gef{\"a}ßpflanzen Brandenburgs},
  year      = {2006},
  language  = {de}
}