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Leningrad State University. Translated from Zhurnal Strukturnoi Khimii, Vol. 32, No. 1, pp. 3–10, January–February, 1991.
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Baranovskii, V.I., Sizova, O.V. Electronic structure of copper oxides, valence state of copper and oxygen, and spin-spin coupling in YBa2Cu3O7-δ and YBa2Cu3O6 . J Struct Chem 32, 1–7 (1991). https://doi.org/10.1007/BF00744933
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DOI: https://doi.org/10.1007/BF00744933