1. Estimation of the productivity of a rock mass excavator and the wear life of cutting bits;Muro;Journal of Construction Management and Engineering, JSCE,1994
2. Experimental study on the impact resistance of a cutter bit of a shield tunneling machine;Muro;Journal of Construction Management and Engineering JSCE,1995
3. Study on shear strength of rocks;Kobayashi;Journal of the Mining and Metallurgical Institute of Japan,1971
4. Study on chipping of carbide tools in metal cutting (2nd report);Kitazumi;Memoìrs of the Niihama National College of Technology, Faculty of Science and Engineering,1985
5. A statistical distribution function of wide applicability;Weibull;Journal of Applied Mechanics,1951