Müller, Bernd G. (1987). "Fluoride mit Kupfer, Silber, Gold und Palladium". Angewandte Chemie99 (11): 1120. doi:10.1002/ange.19870991105.
Popova, T. V.; Aksenova, N. V. (2003). "Complexes of Copper in Unstable Oxidation States". Russian Journal of Coordination Chemistry29 (11): 743. doi:10.1023/B:RUCO.0000003432.39025.cc.
Grannec, J (1984). "Some physical properties of d-transition metal fluorides in unusual oxidation states". Journal of Fluorine Chemistry25: 83. doi:10.1016/S0022-1139(00)81198-7.