Vibration-induced slip in sheared granular layers and the micromechanics of dynamic earthquake triggeringM. Griffa, E. G. Daub, R. A. Guyer, P. A. Johnson, C. Marone and J. CarmelietEPL, 96 1 (2011) 14001DOI: https://doi.org/10.1209/0295-5075/96/14001