TY  - RPRT
TI  - Summary of results of frictional sliding studies, at confining pressures up to 6.98 kb, in selected rock materials
AU  - R. Summers
AU  - J. Byerlee
PY  - 1977
DO  - 10.3133/ofr77142
UR  - https://pubs.usgs.gov/publication/ofr77142
ID  - ofr77142
ER  -