1. GOST R52857.3-2007, Vessels and Equipment. Standards and Methods for Strength Analysis. Strengthening of Holes in Shells and Bottoms Subject to Internal and External Pressure [in Russian].
2. PNAE G-7-002-86, Norms of Strength Calculation of Equipment and Piping of Nuclear Power Plants [in Russian], Energoatomizdat, Moscow (1989), p. 525.
3. ASME Boiler and Pressure Vessel Code, Section VIII, Division 1, NY (2007).
4. EN 13445-3:2002, Unfired Pressure Vessels, CEN European Committee for Standardization, Brussels.
5. A. V. Gornostaev and V. A. Freitag, “Calculation of strengthening of holes in welded cylindrical shells with respect to limit loads,” Sb. Tr. LenNIIKhIMMASH, Vopr. Prochn. Khim. Apparatury, No. 8, 174-191 (1974).