1. Australian Standard AS1012 Testing Concrete, 1991. Standards Australia, Sydney.
2. Australian Standard AS3600 Concrete Structures, 2010. Standards Australia, Sydney.
3. ASTM C 116-68 (Reapproved 1980). Standard Test Method for Compressive Strength of Concrete Using Portions of Beams Broken in Flexure. American Society for Testing and Materials.
4. Austrian Tunnelling Society, Guideline on Inner Shell Concrete, Österreichischen Vereinigung für Beton-und Bautechik, August 2006.
5. Shotcrete support design in blocky ground – towards a deterministic approach;Barrett;Tunnels and Deep Space,1995