1. Standard Test Method for Abrasion Resistance of Stone Subjected to Foot Traffic (ASTM C 241-90), Annual Book of ASTM Standards;ASTM,1990
2. Wear Testing of Inorganic, Nonmetallic Materials Using the Boehme Abrasive Wheel (DIN 52108);DIN,2002
3. Rock Characterization, Testing and Monitoring;ISRM,1981
4. Quarrying and Processing Technologies of Natural stone;Kulaksiz,2007
5. Statistics from Turkish Republic Ministry of Energy and Natural Resources — General Directorate of Mining Affairs;MIGEM,2010