TY  - RPRT
TI  - Representing general theoretical concepts in structural equation models: The role of composite variables
AU  - J.B. Grace
AU  - K.A. Bollen
PY  - 2007
DO  - 10.1007/s10651-007-0047-7
UR  - https://pubs.usgs.gov/publication/70031924
ID  - 70031924
ER  -