1. Tani K. General report: measurement of shear deformation of geomaterials—field tests. In: Proceedings of the 2nd international symposium prefailure deformation of geomaterials, vol. 2; 1994. p. 1115–31.
2. Tani K. Shear strength of uniform weak mudstone: rock shear test vs. triaxial compression tests. In: Proceedings of the 2nd international symposium hard soils—soft rocks; 1998. p. 639–42.
3. Tani K. Proposal of new in-situ test methods to investigate strength and deformation characterictics of rock masses. In: Proceedings of the 2nd international symposium pre-failure deformation of geomaterials; 1999. p. 357–64.
4. Down-hole triaxial test to measure average stress–strain relationship of rock mass;Tani;Soils Foundat,2003
5. Ikenoya T. Fundamental study on new method for in-situ down hole triaxial test using ring core type LVDT. M.Sc. thesis, Yokohama National University; 2006 [in Japanese].