Wrege, B.M., Hasbrouck, W.P., and Schumann, H.H., 1987, Seismic surface-wave attenuation across earth fissures in alluvium, south-central Arizona, in Proceedings of the Surface and Borehole Geophysical Methods and Ground Water Instrumentation Conference and Exposition, October 15-17, 1986, Denver, Colorado: Dublin, Ohio, National Water Well Association, p. 121-130.
