TY  - RPRT
TI  - Discrimination and generalization of complex visual shape variations in pigeons.
AU  - D P Ferraro
AU  - M G Grisham
PY  - 1972
DO  - 10.2466/pms.1972.35.3.915
UR  - https://pubmed.ncbi.nlm.nih.gov/4643986/
ID  - 4643986
ER  -