Popova, T. V.; Aksenova, N. V. (November 1, 2003). "Complexes of Copper in Unstable Oxidation States". Russian Journal of Coordination Chemistry. 29 (11): 743–765. doi:10.1023/B:RUCO.0000003432.39025.cc. S2CID93464243.
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Popova, T. V.; Aksenova, N. V. (November 1, 2003). "Complexes of Copper in Unstable Oxidation States". Russian Journal of Coordination Chemistry. 29 (11): 743–765. doi:10.1023/B:RUCO.0000003432.39025.cc. S2CID93464243.