TY  - RPRT
TI  - Switch studies: a review.
AU  - R L Murphy
AU  - W J Smith
PY  - 2002
DO  - 10.1046/j.1468-1293.2002.00102.x
UR  - https://pubmed.ncbi.nlm.nih.gov/12010362/
ID  - 12010362
ER  -