TY  - RPRT
TI  - Operational specificity: implications for field-based replications.
AU  - K R Derer
PY  - 1985
DO  - 10.1016/0005-7916(85)90024-2
UR  - https://pubmed.ncbi.nlm.nih.gov/3998180/
ID  - 3998180
ER  -