1. Hydraulic fracturing to determine the regional in situ stress field in the Piceance Basin, Colorado;Bredehoeft;Geol. Soc. Am. Bull.,1976
2. In situ stress measurements at the Stripa Mine, Sweden;Doe,1983
3. Introduction to Rock Mechanics;Goodman,1980
4. Determination of the instantaneous shut-in pressure from hydraulic fracturing data and its reliability as a measure of the minimum principal stress;Gronseth,1982
5. A simple method for estimating in situ stresses at great depth;Haimson;ASTM Special Technical Publications 554,1974