1. A. Ya. Maloletnev et al., "Resistance of maraging steel N18K9M5T to cyclic impact loads," Metalloved. Term. Obrab. Met., No. 7, 37 (1975).
2. I. V. Pestov et al., "Kinetics of crack growth in maraging and medium-carbon steels during low-cycle impact fatigue," Metalloved. Term. Obrab. Met., No. 7, 6 (1977).
3. A. Goldberg, Trans. Q. (1968).
4. S. Autolovich et al., Met. Trans.,5, No. 3, 623 (1974).
5. William F. Brown and John E. Srawley, Plane Strain Crack Toughness Testing of High Strength Metallic Materials, ASTM, Philadelphia (1966).