TY  - RPRT
TI  - Stress magnitudes in the crust: constraints from stress orientation and relative magnitude data
AU  - M.L. Zoback
AU  - M. Magee
PY  - 1991
DO  - 10.1098/rsta.1991.0115
UR  - https://pubs.usgs.gov/publication/70014988
ID  - 70014988
ER  -