1. Addenbrooke, T., Potts, D., 1996. Twin tunnel construction ground movements and lining behaviour. Geotechnical Aspects of Underground Construction in Soft Ground, 441 to 446.
2. Barla, G., Ottoviani, M., 1974. Stresses and displacements around two adjacent circular openings near to the ground surface. In: Proceedings of the Third International Congress on Rock Mechanics, Denver, CO., II, pp. 975–980.
3. Building response to excavation-induced settlement;Boscardin;J. Geotech. Eng.,1989
4. Branco, P., 1981. Behaviour of a shallow tunnel in till (Unpublished MSc). University of Alberta.
5. Effects of rock pillar width on the excavation behavior of parallel tunnels;Chen;Tunn. Undergr. Space Technol.,2009