MÖSSBAUER STUDY OF THE STATE OF IMPURITY ATOMS IN TiO2 - AND BaTiO2 -BASED INSULATING AND SEMICONDUCTIVE CERAMICS V. K. Yarmarkin, S. P. Teslenko, A. V. Motorny et A. A. ShustrovJ. Phys. Colloques, 40 C2 (1979) C2-375-C2-377DOI: https://doi.org/10.1051/jphyscol:19792132