TY  - RPRT
TI  - Spatial contiguity facilitates Pavlovian second-order conditioning.
AU  - R A Rescorla
AU  - C L Cunningham
PY  - 1979
DO  - 10.1037//0097-7403.5.2.152
UR  - https://pubmed.ncbi.nlm.nih.gov/528884/
ID  - 528884
ER  -