1. Geotechnology—An Introductory Text for Students and Engineers;Roberts,1977
2. Uniaxial testing in rock mechanics laboratories;Hawkes;Engng Geology,1970
3. Une nouvelle méthode d'essai pour déterminer la résistance á la traction du béton;Carneiro,1947
4. Comments on an indirect tensile test on concrete cylinders;Wright;Mag. Concr. Res.,1955