1. Rapperport, E. J., et al. (AD-440307 [1964] 1/188, 39/64, 168; C.A. 61 [1964] 15774; WADD- TR60–132-Pt. 2 [1962] 1/200, 27/34; AD-287548 [1962] 1/200).
2. Rezukhina, T. N Varekha, L. M Dmitrieva, V. N., Golubenko, A. N. (Zh. Fiz. Khim. 54 [1980] 1163/71; Russ. J. Phys. Chem. 54 [1980] 665/70).
3. Kaufman, L., Bernstein, H. (Phase Diagrams 1 [1970] 45/112, 52, 82 ).
4. /84; C. A. 105 [ 1986 ] No. 138 028 ).
5. Bassett, D. W. (Surf. Sci. 23 [1970] 240/58).