Optical anisotropy and EO properties of ferroelectrics TGS and LHP single crystals using a HAUP techniqueC. Hernández-Rodríguez, R. Guerrero-Lemus and J. Herreros-CedrésEur. Phys. J. AP, 17 3 (2002) 189-200DOI: https://doi.org/10.1051/epjap:2002012