TY  - RPRT
TI  - Estimating V̄s(30) (or NEHRP site classes) from shallow velocity models (depths < 30 m)
AU  - David M. Boore
PY  - 2004
DO  - 10.1785/0120030105
UR  - https://pubs.usgs.gov/publication/70027259
ID  - 70027259
ER  -