TY  - RPRT
TI  - Conceptual and physical differences in the category effect.
AU  - P Dixon
AU  - J M Shedden
PY  - 1987
DO  - 10.3758/bf03209752
UR  - https://pubmed.ncbi.nlm.nih.gov/3696940/
ID  - 3696940
ER  -