1. P hys;Bailyn M.;Rev.,1958
2. J . In st. M etals, 84, 43. a Barrett, C. S. 1956 A cta Cryst. 9, 671. Barrett, C. S. & Trautz, O. R . 1948 Trans. Am er. In st. M;Barrett C. S.;Engrs,1955
3. Proc. Roy;Bleaney B.;Soc. A,1950
4. Proc. Roy;Chambers R .;Soc. A,1956