TY  - RPRT
TI  - Simple equations guide high-frequency surface-wave investigation techniques
AU  - J. Xia
AU  - Y. Xu
AU  - C. Chen
AU  - R.D. Kaufmann
AU  - Y. Luo
PY  - 2006
DO  - 10.1016/j.soildyn.2005.11.001
UR  - https://pubs.usgs.gov/publication/70030418
ID  - 70030418
ER  -