1. Savrasov, S. Y., Kotliar, G. & Abrahams, E. Nature 410, 793–795 (2001).
2. Friedel, J. in The Physics of Metals (ed. Ziman, J. M.) 361–364 (Cambridge Univ. Press, New York, 1969).
3. Cooper, N. G. (ed.) Challenges in Plutonium Science (Los Alamos Science, Number 26, 2000).