1. Los Alamos Science, edited by N.G. Cooper (Los Alamos National Laboratory, Los Alamos, NM 2000), Vol. 26
2. F. Weigel, J.J. Katz, G.T. Seaborg, in The Chemistry of the Actinide Elements, edited by J.J. Katz, G.T. Seaborg, L.R. Morss (Chapman & Hall, New York, 1986), Vol. 1, p. 680
3. J.M. Haschke, T.H. Allen, L.A. Morales, Science 287, 285 (2000)
4. M. Idiri, T. Le Bihan, S. Heathman, J. Rebizant, Phys. Rev. B 70, 014113 (2004)
5. H.Y. Geng, Y. Chen, Y. Kaneta, M. Kinoshita, Phys. Rev. B 75, 054111 (2007)