TY  - RPRT
TI  - Four definitions of strong motion duration: Their predictability and utility for seismic hazard analysis
AU  - Robin K. McGuire
AU  - T. P. Barnhard
PY  - 1979
DO  - 10.3133/ofr791515
UR  - https://pubs.usgs.gov/publication/ofr791515
ID  - ofr791515
ER  -