1. N.W. Alcock, H. Donald, B. Jenkins, J Chem. Soc, Dalton Trans (1974) 1907.
2. J.L. Fourquet, F. Plet, G. Courbion, A. Bulou, R. de Pape, Rev Chim Miner 16 (1979) 490 500.
3. D. Avignant, I. Mansouri, R. Chevalier, J.C. Cousseins, J Solid State Chem 38 (1981) 121 127.
4. L.G. Akselruud, Y.N. Grin, P.Y. Zavalij, V.K. Pecharsky, V.S. Fundamenskii, CSD, Universal program package for single crystal and/or powder structure data treatment, in: 12th European Cystallographic Meeting, Moscow (Abstracts of Papers), Vol. 3, 1989, p. 155.
5. Structures of Complex Fluorides. Potassium Hexafluogermanate and Ammonium Hexafluogermanate