1. G. W. KUHLMAN and R. insinco: in ‘Titanium - science and technology’, (ed. G. Liitjering et al.), 609-616; 1985, Oberursel, DOM.
2. C. C. CHEN and J. E. COYNE: in ‘Titanium '80 - science and technology’, (ed. H. Kimura and O. Izumi), 2513-2522; 1980, Warrendale, PA, TMS-AIME.
3. J. SNOW: in ‘Encyclopaedia of materials science and engineering’, (ed. M. B. Bever), Vol. 3, 2449-2451; 1986, New York, NY, Pergamon.