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2. Twin tunnel construction—ground movements and lining behavior;Addenbrooke;Geotechn Asp Undergr Constr Soft Ground,1996
3. PLAXIS 2-D professional version 8.0–user’s manual;Brinkgreve,2004
4. Tunnel lining design guide;British Tunneling Society,2004
5. Predicting the settlements above twin tunnels constructed in soft ground;Chapman;Tunn Undergr Space Technol,2004