1. G. N. Kuznetsov and M. A. Slobodov, Proc. VNIMI, 22, 151–174 (1950).
2. N. Hast, Engineering Geology, 2 (1), 5–17 (1967); https://doi.org/10.1016/0013-7952(67)90002-6.
3. N. P. Vlokh, A. V. Zubkov, and Yu. G. Feklistov, in: Stress Diagnostics in Rock Masses: Collected Papers [in Russian], Novosibirsk (1980), pp. 30–35.
4. E. R. Leeman, in: Proc. Int. Symp. on the Determination of Stresses in Rock Masses, Lab. Nac. de Eng. Civil, Lisbon (1971), pp. 200–229.
5. V. L. Shkuratnik and P. V. Nikolenko, Methods for Determining the Stress-Strain State of Rock Massif: A Scientific and Educational Course [in Russian], MSMU, Moscow (2012).