1. Fracture toughness, KIC, of triaxially loaded Indiana limestone;Abou-Sayed,1977
2. On the problem of strength and plasticity of concrete;Berg;Dokl. Akad. Nauk SSSR,1950
3. Tensile strains in concrete;Blakey;Australia CSIRO Div. Bldg. Res., Repts. C2.2-1, CS.2-2,1955
4. Brittle fracture of rocks;Brace,1964
5. A note on brittle crack growth in compression;Brace;J. geophys. Res.,1963