1. Risk analysis for tunneling projects;Einstein,2010
2. ALOP/DSU coverage for tunnelling risks;Landrin,2006
3. Cost estimating and risk management for underground projects;Reilly,2005
4. A code of practice for risk management of tunnel works;Bravery,2006
5. Guidelines for tunnelling risk management: international tunnelling association, working group No. 2;Eskesen;Tunnelling Underground Space Technol,2004