1. Tunnelling the World;Vandeville,1996
2. Fiber Reinforced Cement Composites;Balaguru,1992
3. Guide to Shotcrete;ACI Committee 506R,1990
4. Austrian Concrete Society, Guideline on Sprayed Concrete, Vienna 3/99.
5. German guidelines for steel fiber reinforced shotcrete in tunnels with special consideration of design and statical aspects;Schmidt-Schleicher,1995