1. ‘Fracture toughness and its applications’ ASTM STP 381
2. ‘Fracture toughness evaluation by R-curve methods’ ASTM STP 527
3. La rupture des métaux;François,1972
4. CETIM (Centre Technique des Industries Metallurgiques, 52 Avenue Felix-Louat, Senlis, France)
5. Vishay-Micromesures (98 Boulevard Gabriel Peri, Malakoff, France)