QED corrections to the electromagnetic Abraham force - Casimir momentum of the hydrogen atom? B.A. van Tiggelen, S. Kawka and G.L.J.A. Rikken Eur. Phys. J. D, 66 10 (2012) 272 Published online: 25 October 2012 DOI: 10.1140/epjd/e2012-30118-1