1. Forms of hydraulic fractures created during a field test in Overconsolidated glacial drift;Murdoch L.C.;Quarterly Journal of Engineering Geology,1995
2. Influence of geologic discontinuities on hydraulic fracture propagation;Warpinski N.R.;Journal of Petroleum Technology,1987
3. Diamond W.P.andOyler D.C.(1987).Effects of Stimulation Treatments on Coalbeds and Surrounding Strata.USBM Report RI 9083.
4. Elder C.H.(1977).Effects of Hydraulic Stimulation on Coalbeds and Associated Strata.USBM Report RI 8260.
5. Jeffrey R.G. Enever J.R. Ferguson T.et al. (1992).Small‐scale hydraulic fracturing and mineback experiments in coal seams.Proceedings of the 1992 International Coalbed Methane Symposium Tuscaloosa (17–21 May). Paper 9330.