TY  - RPRT
TI  - Study of reverse torque ratio in the helical probe test 
AU  - Chung, Koo Young
AU  - Yokel, Felix Y
PY  - 1986
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 86-3423
DO  - 10.6028/NBS.IR.86-3423
ER  -