1. H. Kitagawa, S. Takahashi, Applicability of fracture mechanics to very small crack or cracks in early stage, in: Proceedings of 2nd International Conference on Mechanical Behavior of Materials, ASM, 1976, pp. 627-631.
2. Fracture mechanics study on growth and threshold of small cracks;Kitagawa;Trans. Japan Soci. Mech. Engrs,1979
3. On the short crack limitations of fracture mechanics;Smith;Int. J. Fracture,1977
4. Fatigue crack propagation of short cracks;El Haddad;J. Engng Mater. Technol. Trans ASME,1979
5. Prediction of non-propagating cracks;El Haddad;Engng Fract. Mech.,1979