TY  - RPRT
TI  - Differential spectra for the 1979 El Centro and the 1984 Morgan Hill, California earthquakes
AU  - G.N. Bycroft
AU  - P. N. Mork
PY  - 1987
DO  - 10.3133/ofr8794
UR  - https://pubs.usgs.gov/publication/ofr8794
ID  - ofr8794
ER  -