TY  - RPRT
TI  - Causes versus enabling conditions.
AU  - P W Cheng
AU  - L R Novick
PY  - 1991
DO  - 10.1016/0010-0277(91)90047-8
UR  - https://pubmed.ncbi.nlm.nih.gov/1786673/
ID  - 1786673
ER  -