1. J.E. Anderson, J. Halpern, and C.S. Samis:Trans. AIME, 1953, vol. 197, pp. 554–58.
2. D.P. Seraphim and C.S. Samis:Trans. AIME, 1956, vol. 206, pp. 1096–99.
3. M.I. Sherman and J.D.H. Strickland:Trans. AIME, 1957, vol. 209, pp. 795–800.
4. V.V. Vasilev and N.E. Muratova:Uchen, Zap. Leningr. Gos. Univ., A.A. Zhdanora No. 211, Ser. Khim Nauk., 1957, vol. 15, pp. {pp129-34}.
5. R.A. Agracheva, A. N. Volskii, and A. M. Egorov: Iz Akad. Nauk USSR.Otel. Tekh. Nauk. Met. Toplivo, 1959, vol. 3, pp. 37–40.