Plasma devices for focusing extreme light pulses J. Fuchs, A.A. Gonoskov, M. Nakatsutsumi, W. Nazarov, F. Quéré, A.M. Sergeev and X.Q. Yan Eur. Phys. J. Special Topics, 223 6 (2014) 1169-1173 Published online: 04 June 2014 DOI: 10.1140/epjst/e2014-02169-y