1. Cotton, F. A., Murillo, C. A. & Walton, R. A. (eds) Multiple Bonds Between Metal Atoms 3rd edn (Springer, 2005).
2. Liddle. S. T. (ed.) Molecular Metal-Metal Bonds: Compounds, Synthesis, Properties (Wiley, 2015).
3. Patel, D. & Liddle, S. T. f-element-metal bond chemistry. Rev. Inorg. Chem. 32, 1–22 (2012).
4. Fang, W., Maron, L. & Zhu, C. in Handbook on the Physics and Chemistry of Rare Earths Vol. 63 (eds Bünzli, J.-C. G. & Kauzlarich, S. M.) Ch. 327 (North-Holland/Elsevier, 2023).
5. Gorokhov, L. N., Emelyanov, A. M. & Khodeev, Y. S. Mass-spectroscopic investigation of stability of gaseous U2O2 and U2. High Temp. 12, 1307–1309 (1974).