Cassini observations of ionospheric plasma in Saturn's magnetotail lobes - Felici, M; Arridge, CS; Coates, AJ; Badman, SV; Dougherty, MK; Jackman, CM; Kurth, WS; Melin, H; Mitchell, DG; Reisenfeld, DB; Sergis, N (Journal of Geophysical Research: Space Physics, 2016)