1. J. BELLE (Ed.), Uranium Dioxide, Properties and Nuclear Application, USAEC, Washington, D. C., 1961, p. 481.
2. W. B. LEWIS, AECL-964 (DM-58), 1960.
3. B. G. CHILDS, J. Nuclear Mater., 9 (1963) No. 3, 224.
4. F. J. STUBBS, G. N. WALTON, Emission of Active Rare Gases from Fission Material During Irradiation with Slow Neutrons, Proc. Intern. Conf. on the Peaceful Uses of Atomic Energy, Geneva, 1955, Vol. 7, United Nations, New York, 1956, p. 163.
5. Y. OSAWA, J. Nuclear Sci. Technol., 2 (1965) No. 8, 296.