TY  - RPRT
TI  - Numerical investigation of implementation of air-earth boundary by acoustic-elastic boundary approach
AU  - Y. Xu
AU  - J. Xia
AU  - R. D. Miller
PY  - 2007
DO  - 10.1190/1.2753831
UR  - https://pubs.usgs.gov/publication/70030773
ID  - 70030773
ER  -