Quantum resonant effects in the delta-kicked rotor revisited A. Ullah, S.K. Ruddell, J.A. Currivan and M.D. Hoogerland Eur. Phys. J. D, 66 12 (2012) 315 Published online: 21 December 2012 DOI: 10.1140/epjd/e2012-30171-8