1. The Deformation and Ageing of Mild Steel: III Discussion of Results
2. Petch, N.J., Proc. Swampscott Conf, MIT Press, p. 54 (1955).
3. Pickering, F.B., Physical Metallurgy and the Design of Steels, Applied Science Publishers.
4. Pickering, F.B. and Gladman, T., ISI Special Report 81 (1961).