1. H. Kleykamp, Forschungszentrum Karlsruhe Report KFK 470, 1, 1990.
2. Investigations on potassium and rubidium uranates
3. Investigations on cesium uranates—I
4. A.B. Van Egmond, Technical Report RCN-246, RCN, Patten, 1976.
5. T. Yamashita, JAERI, Report JAERI – 1310, 1988.