1. D. Lee and W.A. Backofen: Trans. AIME, 1966, vol. 236, pp. 1696–1704.
2. D.N. Fager and W.F. Spurr: Trans. ASM, 1968, vol. 61, pp. 283–92.
3. N.E. Paton and W.A. Backofen: Metall. Trans., 1970, vol. 1, pp. 2839–47.
4. E.D. Levine: TMS-AIME, 1966, vol. 236, pp. 1558–65.
5. K.R. Evans: TMS-AIME, 1968, vol. 242, pp. 648–53.