Terahertz time-domain measurements by electro-optic crystals with various symmetriesI.E. Ilyakov, G.Kh. Kitaeva, B.V. Shishkin and R.A. AkhmedzhanovEPJ Web Conf., 149 (2017) 05004DOI: https://doi.org/10.1051/epjconf/201714905004