Nonlinear Transfer of Intense Few Cycle Terahertz Pulse Through Opaque SemiconductorsO.V. Chefonov, A.V. Ovchinnikov, M.B. Agranat, V.E. Fortov, E.S. Efimenko, A.N. Stepanov, T. Ozaki, X. Chai, X. Ropagnol, A.A. Ushakov and A.B. Savel’evEPJ Web Conf., 195 (2018) 07007DOI: https://doi.org/10.1051/epjconf/201819507007