@misc{indiciae19f98c39ba0b, title = {[A training method for physiological perception studies and their application in orientation experiments with birds].}, author = {H G Walraff and N Kleber}, year = {1967}, doi = {10.1007/bf02135706}, url = {https://pubmed.ncbi.nlm.nih.gov/6055949/}, note = {Source identifier: 6055949} }