Anomalous force-velocity relation of driven inertial tracers in steady laminar flows F. Cecconi, A. Puglisi, A. Sarracino and A. Vulpiani Eur. Phys. J. E, 40 9 (2017) 81 Published online: 25 September 2017 DOI: 10.1140/epje/i2017-11571-y