Influence of metallic and lanthanide dopants on the thermal diffusivity of lithium niobate crystals J. Bodzenta, B. Burak, W. Hofman, M. Gała, J. Kucytowski, T. Łukasiewicz, M. Pyka et K. Wokulska J. Phys. IV France, 117 (2004) 7-12 DOI: 10.1051/jp4:2004117002