TY  - RPRT
TI  - Matching in concurrent variable-interval avoidance schedules.
AU  - A W Logue
AU  - P A De Villiers
PY  - 1978
DO  - 10.1901/jeab.1978.29-61
UR  - https://pubmed.ncbi.nlm.nih.gov/16812039/
ID  - 16812039
ER  -