1. USSR State Standard GOST 21153.2–84. Rocks. Methods for Determining Ultimate Strength under Uniaxial Compression. Moscow, 1985.
2. USSR State Standard GOST 21153.3–85. Rocks. Methods for Determining Ultimate Strength under Uniaxial Tension. Moscow, 1985.
3. USSR State Standard GOST 21153.8–88. Rocks. Methods for Determining Ultimate Strength under Volumetric Compression. Moscow, 1988.
4. ASTM D 7012–04. Standard test method for compressive strength and elastic moduli of intact rock core specimens under varying states of stress and temperatures.
5. ASTM D 3967–95a. Standard test method for splitting tensile strength of intact rock core specimens.