1. The fracture of rock around underground openings;Hiramatsu;Mem. Fac. Engng Kyoto Univ.,1959
2. The behaviour of a prototype and a model mine tunnel;Krauland,1970
3. Stability of single openings in horizontally bedded rock;Stephansson;Eng. Geol.,1971
4. Uniaxial compression tests on right angular rock specimens with central holes;Rummel,1971
5. A theoretical and experimental evaluation of the Griffith theory of brittle fracture;Lajtai;Tectonophysics,1971