@inproceedings{EllgringClarke1976,
  author    = {Ellgring, Johann Heinrich and Clarke, Andrew},
  title     = {Abtastrate und systematische Verhaltensbeobachtung},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-43147},
  year      = {1976},
  abstract  = {No abstract available},
  language  = {de}
}