Wideband Josephson THz flux-flow oscillator integrated with the slot lens antenna and the harmonic mixerN.V. Kinev, K.I. Rudakov, L.V. Filippenko, A.M. Baryshev and V.P. KosheletsEPJ Web Conf., 195 (2018) 02003DOI: https://doi.org/10.1051/epjconf/201819502003