1. Yagiz S. Development of rock fracture & brittleness indices to quantifying the effects of rock mass features & toughness in the CSM model basic penetration for hard rock tunneling machines. PhD thesis, Colorado School of Mines, Golden, Colo, 2002.
2. Application of two non-linear prediction tools to the estimation of tunnel boring machine performance;Yagiz;Eng Appl Artif Intell,2009
3. Utilizing rock mass properties for predicting TBM performance in hard rock condition;Yagiz;Tunnel Underground Space Tech,2008
4. Yagiz S, Rostami J, Kim T, Ozdemir L, Merguerian C. Factors influencing performance of hard rock tunnel boring machine. In: Proceedings of EUROCK'09, Dubrovnik, Croatia, 2009, p. 695–700.
5. Tarkoy PJ. Rock hardness index properties and geotechnical parameters for predicting tunnel boring machine performance. PhD thesis, University of Illinois Urbana-Champaign, 1975.