Efficient electron cooling in Cold Electron Bolometers A.V. Gordeeva, A.L. Pankratov, V.O. Zbrozhek, A.V. Blagodatkin, L.S. Revin, D.A. Pimanov and L.S. Kuzmin EPJ Web Conf., 195 (2018) 05003 Published online: 23 November 2018 DOI: 10.1051/epjconf/201819505003