Recent results on THz gyrotron-based molecular spectroscopyG.Yu. Golubiatnikov, M.A. Koshelev, A.I. Tsvetkov, A.P. Fokin, M.Yu. Glyavin and M.Yu. TretyakovEPJ Web Conf., 195 (2018) 06017DOI: https://doi.org/10.1051/epjconf/201819506017