1. Guidance Document 50-345-82. Strength Design and Testing. Methods for the Mechanical Testing of Metals. Determination of Crack Resistance Characteristies (Fracture Toughness) under Cyclic Loading. Instructions in Methods [in Russian], Izd. Standartov, Moscow (1983).
2. ASTM E 1820-01. Standard Test for Measurement of Fracture Toughness, Annual Book of ASTM Standards (1999).
3. A. A. Griffith, “The phenomena of rupture and flow in solids,” Phil. Trans. Roy. Soc. London, Ser. A, 221, No. 1, 163–198 (1921).
4. G. R. Irwin, “Analysis of stresses and strain near end of a crack traversing a plate,” J. Appl. Mech., 24, No. 3, 361–364 (1957).
5. E. Orowan, “Fracture and strength of solids,” Rep. Prog. Phys., 12, 185–232 (1949).