TY - RPRT TI - In situ geomechanics of crystalline and sedimentary rocks; Part IV, An update on two BASIC computer programs for the determination of in situ stresses using the CSIRO hollow inclusion stress cell and the USBM borehole deformation gage AU - H.S. Swolfs AU - P. S. Powers PY - 1985 DO - 10.3133/ofr85509 UR - https://pubs.usgs.gov/publication/ofr85509 ID - ofr85509 ER -