Entanglement dynamics of multiqubit system in Markovian and non-Markovian reservoirs Z. X. Man, Y. J. Zhang, F. Su and Y. J. Xia Eur. Phys. J. D, 58 1 (2010) 147-151 Published online: 13 April 2010 DOI: 10.1140/epjd/e2010-00094-7