TY  - RPRT
TI  - Hydraulic fracturing in situ stress measurements to 2.1 km depth at Cajon Pass, California
AU  - J. H. Healy
AU  - Mark D. Zoback
PY  - 2012
DO  - 10.1029/gl015i009p01005
UR  - https://pubs.usgs.gov/publication/70014407
ID  - 70014407
ER  -