Planar slow-wave structures for miniaturized low-voltage Cherenkov devices N.M. Ryskin, A.I. Benedik, A.G. Rozhnev, N.I. Sinitsyn, G.V. Torgashov and R.A. Torgashov EPJ Web Conf., 149 (2017) 04027 Published online: 04 August 2017 DOI: 10.1051/epjconf/201714904027