TY  - JOUR
AU  - Ebrahimabadi, Arash
TI  - Introducing a Model for Road headers' Performance Prediction
Based on the Specific Energy and the Angle between Tunnel Axis
and the Planes of Weakness
JO  - 
VL  - 6
IS  - 20
SP  - 36
EP  - 48
PY  - 2012
DO  - 
ER  -