1. Engineering classification of rock masses for the design of tunnel support;Barton;Rock Mech.,1974
2. Engineering Rock Mass Classifications;Bieniawski,1989
3. Bilgin, A.Z., Elibol, E., Bligin, Z.R., Begenilmis, S., 1981, The Geology of Ceyhan–Karatas–Yumurtalık–Osmaniye–Haruniye, Kadirli area and its surroundings. MTA Report, Ankara, Turkey (in Turkish)
4. Bilgin, A.Z., Elibol, E., 1984, Stratigraphy and structural setting of the Misis Mountains and their northeast extension. 38th Scientific and Technical Congress of the Geological Society of Turkey. Abstracts Book. Ankara Turkey (in Turkish)
5. Extreme deformation and damage during the construction of large tunnel;Brox;Tunneling Underground Space Technol.,1999