@article{Klamma2013,
  author    = {Gustav Klamma},
  title     = {Ornithologische Notizen {\"u}ber das NSG Tunxdorfer Schleife},
  journal   = {Ver{\"o}ffentlichungen des Naturwissenschaftlichen Vereins zu Osnabr{\"u}ck},
  volume    = {33},
  pages     = {117 -- 121},
  year      = {2013},
}