TY  - RPRT
TI  - User's manual for RAY84/R83PLT interactive two-dimensional raytracing/synthetic seismogram package
AU  - J.H. Luetgert
PY  - 1988
DO  - 10.3133/ofr88238
UR  - https://pubs.usgs.gov/publication/ofr88238
ID  - ofr88238
ER  -