1. Stavrogin, A.I. and Tarasov, B.G., Eksperimental’naya fizika i mekhanika gornykh porod (Experimental Physics and Rock Mechanics), Nauka: Saint-Petersburg, 2001.
2. Litvinsky, G.G., Analiticheskaya teoriya prochnosti gornykh porod i massivov (Analytical Theory of Strength of Rocks and Rock Masses), Donetsk: Nord-Press, 2008.
3. Nadai, A., Theory of Flow and Fracture of Solids, McGraw-Hill: New York, 1963.
4. Novozhilov, V.V., Physical Sense of Stress Invariants, Prikl. Matem. Mekh., 1951, vol. 15,issue 2.
5. Il’yushin, A.A., Plastichnost’ (Plasticity), Moscow: Gostekhizdat, 1948.