1. Association of British Insurers and British Tunnelling Society (ABI and BTS), 2003. The Code of Risk Management of Tunnel Works in the UK. BTS, London.
2. Twin tunnel interaction – surface and subsurface effects;Addenbrooke;International Journal of Geomechanics,2001
3. Predicting the Dynamics of Ground Settlement and its Derivatives Caused by Tunnelling in Soil;Attewell,1982
4. BBC News, 2010. Germans Mobilise Against Stuttgart Rail Project. (accessed October 2012).
5. Building response to excavation induced settlement;Boscardin;Journal of Geotechnical Engineering,1989