Kohlmann, H.; Beck, H. P. (2000). "Uranium's valency in U3S5". Journal of Solid State Chemistry (Academic) 150 (2): 339. doi:10.1006/jssc.1999.8599. Bibcode: 2000JSSCh.150..336K.
Kohlmann, H.; Beck, H. P. (2000). "Uranium's valency in U3S5". Journal of Solid State Chemistry (Academic) 150 (2): 339. doi:10.1006/jssc.1999.8599. Bibcode: 2000JSSCh.150..336K.