1. C. E. Myers and D. T. Graves, J. Chem. Eng. Data 22(4), 440 (1977).
2. A. Kovács and R. J. M. Konings, Handbook on Physics and Chemistry of Rare Earths (Elsevier, New York, 2003), Vol. 33, Chap. 213, p. 147.
3. A. D. Chervonnyi and N. A. Chervonnaya, Zh. Fiz. Khim. 78(3), 389 (2004) [Russ. J. Phys. Chem. 78 (3), 313 (2004)].
4. C. E. Myers and D. T. Graves, J. Chem. Eng. Data 22(4), 436 (1977).
5. A. D. Chervonnyi and N. A. Chervonnaya, Zh. Fiz. Khim. 81(11), 1956 (2007) [Russ. J. Phys. Chem. A. 81 (11), 1751 (2007)].