Citation: Jayaraman, V.; Magrez, A.; Caldes, M.; Brohan, L.; Joubert, O.; Piffard, Y.; Taulelle, F.; Rodriguez-Carvajal, J. (2004). Characterization of perovskite systems derived from Ba2 In2 O5 vac. Part II: the proton compounds Ba2 In2-2x Ti2x O5+x O4+2x (O H)y (0 < x < 1; y < 2(1-x)). Solid State Ionics, 170, pp. 25-32.