Long-period, long-duration seismic events during hydraulic stimulation of shale and tight gas reservoirs - Part 1: Waveform characteristics

Das, I. and M.D. Zoback, Long-period, long-duration seismic events during hydraulic stimulation of shale and tight gas reservoirs - Part 1: Waveform characteristics, Geophysics, v. 78, no. 6 (November-December 2013), P. 1-12, 13 FIGS.