Strong terahertz fields: interaction with condensed matter and electron accelerationYu.A. Sergeev, I.V. Oladyshkin, S.B. Bodrov, A.I. Korytin, M.D. Tokman, S.V. Kuzikov, A.A. Vikharev and A.N. StepanovEPJ Web Conf., 149 (2017) 05009DOI: https://doi.org/10.1051/epjconf/201714905009