1. L. H. T. Hopkin and P. O. Forrest, 'The Relationship between the Structures and Mechanical Properties of Metals', Nat. Phys. Lab. Symposium No. 15, p. 348. 1963: London (HM Stationery Office).
2. N. P. Allen, 'Iron and Its Dilute Solutions', edited by C. W. Spencer and P. E. Werner, p. 271. 1963: New York (Interscience).