1. A. I. Veinik, Theory of Solidification of Castings [in Russian], Moscow (1960).
2. E. M. Kitaev, Solidification of Steel Ingots [in Russian], Moscow (1982).
3. Yu. A. Samoilovich, Formation of an Ingot [in Russian], Moscow (1977).
4. A. N. Tikhonov and E. G. Shvidkovskii, Zh. Tekh. Fiz.,17, No. 2, 161?176 (1947).
5. A. A. Samarskii and V. D. Moiseenko, Zh. Vychisl. Mat. Mat. Fiz.,5, No. 5, 816?817 (1965).