1 23 Journal of Solid State Electrochemistry Current Research and Development in Science and Technology ISSN 1432-8488 J Solid State Electrochem DOI 10.1007/s10008-013-2190-4 Crystal structure and high-temperature electrical conductivity of novel perovskite- related gallium and indium oxides S. Ya. Istomin, E. V. Antipov, Yu. S. Fedotov, S. I. Bredikhin, N. V. Lyskov, S. Shafeie, G. Svensson, Y. Liu & Z. Shen