TY  - RPRT
TI  - Project 2000. The difference between conceptual models, practice models.
AU  - L Brazen
PY  - 1992
DO  - 10.1016/s0001-2092(07)68748-1
UR  - https://pubmed.ncbi.nlm.nih.gov/1444345/
ID  - 1444345
ER  -