1. J. E. Bailey "Electron Microscopy and Strength of Crystals ", p. 535. 1963: New York and London (Interscience).
2. D. Kuhlmann-Wilsdorf, R. Maddin, and H. G. F. Wilsdorf, "Strengthening Mechanisms in Solids ", p. 137. 1962: Metals Park, Ohio (Amer. Soc. Metals).