1. Melting of Anhydrous Inorganic Salt Systems. Handbook, Ed. by N. K. Voskresenskaya (Izd-vo AN SSSR, Moscow, 1961), Vol. 2 [in Russian].
2. Melting Diagrams of Salt Systems. Ternary Reciprocal Systems, Ed. by V. I. Posypaiko and E. A. Alekseeva (Khimiya, Moscow, 1976) [in Russian].
3. V. Meyerhoffer, Sitzungsber. Wein: Akad. Wiss. 104 (1895).
4. E. Jänecke, Z. Phys. Chem. 64, 343 (1908).
5. E. Jänecke, Z. Phys. Chem. 80, 1 (1912).