1. 15 m diameter tunnelling under Netherlands Polders. Singapore;Aime,2004
2. The face stability of slurry-shield-driven tunnels;Anagnostou;Tunn. Undergr. Space Technol.,1994
3. Tunnelling Machines in Soft Ground: a Comparison of Slurry and EPB Shield Systems;Babendererde;Tunn. Undergr. Space Technol.,1991
4. Aquifer Hydraulics: A comprehensive Guide to Hydrogeologic Data Analysis;Batu,1998
5. Pore Pressures in front of tunnel, measurements, calculations and consequences for stability of tunnel face. Kyoto, Japan;Bezuijen,2001