TY - RPRT TI - Rayleigh-wave diffractions due to a void in the layered half space AU - J. Xia AU - Y. Xu AU - R. D. Miller AU - Jonathan E. Nyquist PY - 2006 DO - 10.1190/1.2369782 UR - https://pubs.usgs.gov/publication/70031032 ID - 70031032 ER -