1. A hydraulic process for increasing the productivity of wells;Clark;Trans. Am. Inst. Min. Metall. Eng.,1949
2. Mechanics of hydraulic fracturing;Hubbert;Trans. Am. Inst. Min., Metall. Pet. Eng.,1957
3. Stresses in earth's crust as determined from hydraulic fracturing data;Scheidegger;Geol. Bauwes.,1962
4. The determination of tectonic stresses through analysis of hydraulic well fracturing;Kehle;J. Geophys. Res.,1964
5. Can the state of stress be determined from hydraulic fracturing data?;Gretener;J. Geophys. Res.,1965