Planck intermediate results LIII. Detection of velocity dispersion from the kinetic Sunyaev-Zeldovich effect - Aghanim, N; Akrami, Y; Ashdown, M; Aumont, J; Baccigalupi, C; Ballardini, M; Banday, AJ; Barreiro, RB; Bartolo, N; Basak, S; Battye, R; Benabed, K; et al. (ASTRONOMY & ASTROPHYSICS, 2018)