1. K. G. Davis and E. Teghtsoonian:Trans. TMS-AIME, 1963, vol. 227, pp. 762–67.
2. A. Seeger, H. Kronmüller, O. Boser, and M. Rapp:Phys. Status Solidi, 1963, vol. 3, pp. 1107–25.
3. O. Boser:Z. Metallic., 1967, vol. 58, pp. 404–10.
4. H. M. Thieringer:Z. Metallk., 1968, vol. 59, pp. 400–08; 476–91.
5. J. B. Hess and C. S. Barrett:AIME TRANS., 1952, vol. 194, pp. 645–47.