Fast electron penetration in laser-irradiated solidsF.Y. Khattak, E. Garcia Saiz, P. Gibbon, A. Karmakar, T.W.J. Dzelzainis, C.L.S. Lewis, A.P.L. Robinson, M. Zepf and D. RileyEur. Phys. J. D, 66 11 (2012) 298DOI: https://doi.org/10.1140/epjd/e2012-30253-7