1. Mining Encyclopedia [in Russian], Vol. 2, Sov. Éntsikl., Moscow (1986).
2. International Conference on Mine Pressure [Russian translation], Ugletekhizdat, Moscow (1957).
3. P. Ginard, “Selecting the cross section of drifts and the pillar dimensions in rock similar to an elastic solid”, in: International Conference on Mine Pressure [Russian translation], Ugletekhizdat, Moscow (1957).
4. L. Denouél', “Review of mine-pressure theory”, in: International Conference on Mine Pressure [Russian translation], Ugletekhizdat, Moscow (1957).
5. G. Spackeler, “Methods of investigating mine pressure”, in: International Conference on Mine Pressure [Russian translation]. Ugletekhizdat, Moscow (1957).