1. A. V. Bakiev, R. S. Zainullin, F. K. Arslanova, and R. G. Abdeev, “Stress state of “shell-bottom” butt welds in shell-type petroleum-industry equipment with the existence of edge displacement,”Modern Problems of Drilling and Petroleum-Industry Mechanics [in Russian], Izdatel'stvo Ufimskogo Neftyanogo Instituta, Ufa (1986), pp. 158–163.
2. I. I. Gol'denblat and V. A. Kopnov,Strength and Plasticity Criteria for Structural Materials [in Russian], Mashinostroenie, Moscow (1968).