1. Barton, N., 1976. A recent experience with the Q System in tunnel support design. In: Bieniawski, Z.T. (Ed.), Proceedings of the Symposium on Exploration for Rock Engineering, vol. 1. Johannesburg, pp. 107–115
2. Brattli, B., Broch, E., 1995. Stability problems in water tunnels caused by expandable minerals—swelling pressure measurements and mineralogical analysis. Eng. Geol. 39(3–4), 151–169
3. Engineering Rock Mass Classification;Bieniawski,1989
4. Bilgin, N., Balcı, C., Tunçdemir, H., Eskikaya, S., Agül, M., Algan, M., 1999a. The performance prediction of a TBM in difficult ground condition, Proceedings of the AFTES International Conference, Paris, pp. 115–121
5. Bilgin, N., Balcı, C., Acaroğlu, Ö., et al., 1999b. The performance prediction of a TBM in Tuzla–Dragos Sewerage Tunnel, The World Tunnel Congress ‘99’ Oslo, Balkema, Rotterdam, pp. 817–822