1. W. WEIBULL,Ingenjörsvetenskapsakademien, Handlingar 151 (1939) 1.
2. K. TRUSTRUM and A. De S. JAYATILAKA,J. Mater. Sci. 14 (1979) 1080.
3. J. W. HEAVENS and P. N. MURGATROYD,J. Am. Ceram. Soc. 53 (1970) 503.
4. B. BERGMAN, “On the Analysis of Brittle Fracture Statistics”, TRITA-MAC-0256, April 1985, Materials Centre, Royal Institute of Technology, S-100 44 Stockholm, Sweden.
5. Idem, J. Mater. Sci. Lett. 3 (1984) 689.