%0 Journal Article %T Stress-dependent elastic properties of shales—laboratory experiments at seismic and ultrasonic frequencies %A Szewczyk, Dawid %A Bauer, Andreas %A Holt, Rune M %J Geophysical Journal International %V 212 %N 1 %P 189-210 %@ 0956-540X %D 2018-01-01 %I The Royal Astronomical Society %~ DeepDyve