1. The face stability of slurry-shield-driven tunnels;Anagnostou;Tunnelling and Underground Space Technology,1994
2. Face stability conditions with earth pressure balanced shields;Anagnostou;Tunnelling and Underground Space Technology,1996
3. Itasca Consulting Group, Inc., 2006. FLAC3D Manual, third ed. (FLAC3D Version 3.1).
4. Face stability and required support pressure for TBM driven tunnels with ideal face membrane – Drained case;Kim;Tunnelling and Underground Space Technology,2010
5. Kirsch, A. 2009. Experimental and numerical investigation of the face stability of shallow tunnels in sand. Budapest: ITA-AITES World Tunnel Congress Safe Tunnelling For The City and Environment.