TY  - RPRT
TI  - Letter: Effect of directional-flow patterns upon motion thresholds.
AU  - W Richards
AU  - J Dichgans
PY  - 1974
DO  - 10.1364/josa.64.001148
UR  - https://pubmed.ncbi.nlm.nih.gov/4852764/
ID  - 4852764
ER  -