R  Pompili, Anania, MP , Bellaveglia, M , Biagioni, A , Bini, S , Bisesto, F , Brentegani, E , Cardelli, F , Castorina, G , Chiadroni, E , and others, . 2018. ?Focusing Of High-Brightness Electron Beams With Active-Plasma Lenses?. Physical Review Letters, 121, Pp. 174801.