1. Shotcrete Support Design for Underground Excavations in Rock;Barrett,1993
2. Engineering classification of rock Masses for the design of tunnel support;Barton;Rock Mechanics,1974
3. Engineering classification of jointed rock masses;Bieniawski;The Civil Engineer in South Africa,1973
4. Rock Mechanics for Underground Mining;Brady,1993
5. Innovative liner support trials in underground hardrock mines;Espley,1994