TY  - RPRT
TI  - Psychophysically derived visual mechanisms in turtle. II--Spatial properties.
AU  - D F Sisson
AU  - A M Granda
PY  - 1989
DO  - 10.1016/0042-6989(89)90177-6
UR  - https://pubmed.ncbi.nlm.nih.gov/2773328/
ID  - 2773328
ER  -