1. Akyurek, B., Duru, M., Sutcu, Y.F., Papak, I., Saroglu, F., Pehlivan, N., Gonenc, O., Granit, S., Yasar, T., 1997. 1: 100000 ölçekli açỳnsama nitelikli Türkiye Jeoloji Haritalarỳ, No. 55, Ankara F15 paftasỳ. MTA Genel Müdürlüğü Jeoloji Etüdler Dairesi, Ankara (in Turkish).
2. The porosity and engineering properties of vesicular basalt in Saudi Arabia;Al-Harthi;Engineering Geology,1999
3. Alvarez Grima, M., 2000. Neuro-fuzzy Modeling in Engineering Geology. A.A. Balkema, Rotterdam, 244pp.
4. Fuzzy model for the prediction of unconfined compressive strength of rock samples;Alvarez Grima;International Journal of Rock Mechanics and Mining Science,1999
5. The physical and mechanical properties of the Fell sandstone, Nothumberland, England;Bell;Engineering Geology,1978