1. 1. N.P.Uvarov, Composite Solid Electrolytes, Soran, Novosibirsk (2008) [in Russian].
2. 2. T.Kanazava, Inorganic Phosphorus Materials, Naukova Dumka, Kiev (1998) [in Russian].
3. 3. V.N.Makatun, Chemistry of Inorganic Hydrates, Nauka i Tehnika, Moscow (1985) [in Russian].
4. Phase transitions, structure and ion conductivity of zirconium hydrogen phosphates, H1±XZr2−XMX(PO4)3·H2O (M=Nb, Y)
5. 5. N.M.Antraptseva, L.N.Shchegrov, I.G.Ponomareva, J. Inorg. Chem., 51, 1493 (2006).