@article{WestrichFrommerManderyetal.2008,
  author    = {Paul Westrich and Ulrich Frommer and Klaus Mandery and Helmut Riemann and Haike Ruhnke and Christoph Saure and Johannes Voith},
  title     = {Rote Liste der Bienen Deutschlands (Hymenoptera, Apidae) (4. Fassung, Dezember 2007)},
  journal   = {Eucera},
  volume    = {1},
  number    = {3},
  pages     = {33 -- 87},
  url       = {https://www.wildbienen.info/downloads/eucera-1-2008-03.pdf},
  year      = {2008},
}