1. Grigor’eva, L.F., Petrov, S.A., Sinel’shchikova, O.Yu., and Gusarov, V.V., Design of New Functional Materials Based on Complex Oxides with a Tunnel Structure of the Ramsdellite, Hollandite, and Ba2Ti9O20 Types, Fiz. Khim. Stekla, 2004, vol. 30, no. 3, pp. 346–361 [Glass Phys. Chem. (Engl. transl.), 2004, vol. 30, no. 3, pp. 257–269].
2. Grigor’eva, L.F., Petrov, S.A., Popov, V.P., and Romanov, D.P., Phases in the M 2O-MgO-TiO2 (M = Li, K, Rb) System, Izv. Akad. Nauk SSSR, Neorg. Mater., 1986, vol. 22, no. 4, pp. 631–635.
3. Petrov, S.A., Grigor’eva, L.F., Sazeev, I.Yu., and Filatov, S.K., Some Crystal Chemical Features of Phases with a Hollandite Structure Crystallizing in the K2O-MO(O3)-TiO2 (M = Mg, Zn, Ga) and O-MgO-TiO2 (M’ = Li, K, Cs) Systems, Izv. Ross. Akad. Nauk, Neorg. Mater., 1994, vol. 30, no. 7, pp. 963–966.
4. Takahashi, T., Kuwabara, K., and Aogama, H., Preparation of Sintered Oxide with a Hollandite-Type Structure (Kx M xTi8-x O16) (M = Al, Fe, Co, Cr) and Its Ionic Conduction, J. Chem. Soc. Jpn., Chem. Ind. Chem., 1974, no. 12, pp. 2291–2296.
5. Mori, T., Yamauchi, S., Yamamura, H., and Watanabe, M., New Hollandite Catalyst for the Selective Reduction of Nitrogen Monoxide with Propene, Appl. Catal., A, 1995, vol. 129, pp. L1–L7.