1. A. V. Pens, R. D. Stout, and B. R. Summers, ?Fracturs toughness of cryogenic alloys,? in: Mechanical Properties of Structural Materials at Low Temperatures [Russian translation], Matallurgiya, Moscow (1983), pp. 46?58.
2. J. M. Wells, W. A. Logedon, and R. Kosowski, ?Examination of welded joints in corrosionresisting austenitic cryogenic steels,? in: Mechanical Properties of Structural Materials at Low Temperatures [Russian translation], Metallurgiya, Moscow (1983), pp, 235?250.
3. RD 50-260-81. Procedure Instructions. Strength Calculations and Tests in Engineering. Determination of Fracture Toughness (Cracking Resistance) Characteristics in Static Loading [in Russian], Standartov, Moscow (1982).