1. A fractographic feature of plane strain fracture;Spitzig;Trans. Am. Soc. Metals,1968
2. Correlation of plane strain crack toughness with strain hardening characteristics of steels;Krafft;Appl. Mater. Res.,1964
3. Dynamic mechanical behaviour of metal at the tip of a plane strain crack;Krafft,1967
4. Fractographic observations of stretched regions in front of fatigue cracks;Gerberich;Trans. Am. Soc. Metals,1969
5. A suggestion on the nature of the plastic stretch zone;Griffis;Metall. Trans.,1970