1. Babendererde, S. Channel Tunnel—Tunnel sous la Manche. Graphical presentation of tunnel progress rates.
2. The Channel Tunnel Project — The United Kingdom tunnels: a design and construction overview;Biggart,1991
3. Criteria and design for alignment of the Channel Tunnel in the United Kingdom sector;Bridges,1991
4. Soil deformations caused by soft-ground tunnelling;Glossop,1978
5. The Seikan Tunnel;Iida,1992