Measuring the gravitational acceleration with matter-wave velocimetry Giulio D’Amico, Luigi Cacciapuoti, Manan Jain, Su Zhan and Gabriele Rosi Eur. Phys. J. D, 73 5 (2019) 98 Published online: 14 May 2019 DOI: 10.1140/epjd/e2019-90543-0