Koehler

Mott played a major part, with his collaborator Frank Nabarro (b. 1917) and in consultation with Orowan, in working out the dynamics of dislocations in stressed crystals. A particularly important early paper was by Mott and Nabarro (1941), on the flow stress of a crystal hardened by solid solution or a coherent precipitate, followed by other key papers by Koehler (1941) and by Seitz and Read (1941). Nabarro has published a lively sequential account of their collaboration in the early days (Nabarro 1980). Nabarro originated many of the important concepts in dislocation theory, such as the idea that the contribution of grain boundaries to the flow stress is inversely proportional to the square root of the grain diameter, which was later experimentally confirmed by Norman Fetch and Eric Hall. 

Koehler, J.S, Seitz. F., Read Jr., W.T., Shockley, W. and Orowan, E. (eds.) (1954) Dislocations in Metals (The Institute of Metals Division, American Institute of Mining and Metallurgical Engineers, New York). 

Koehler, E. L., Corrosion Under Organic Coatings, U. R. Evans Intern. 

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