1. National Bureau of Standards AMS;M. Ambramowitz,1964
2. Barenblatt, G.I.: The formation of equilibrium cracks during brittle fracture. General ideas and axially symmetric cracks. Prikl. Mat. Meh. 23, 434–444 (1959)
3. Bilby, B.A., Cottrell, A.H., Swinden, K.H.: The spread of plastic yield from a notch. Proc. R. Soc. Lond., Ser. A 272, 304–314 (1963)
4. Bui, H.D., Ehrlacher, A.: Propagation of damage in elastic and plastic solids. In: Advances in Fracture Research (Fracture 81), Proc 5th International Conference on Fracture (ICF5), Cannes, pp. 533-551, (1981)
5. Bui, H.D., Ehrlacher, A., Renard, C.: Propagation of a damaged zone in a brittle elastic solid in mode I and in steady state. Méch. Solides Anélast. C. R. Acad. Sci. Paris, Ser. II 295, 917–922 (1982) (in French)