The role of correlated environments on non-Markovianity and correlations of a two-qubit system Qin-Sheng Zhu, Chang-chun Ding, Shao-Yi Wu and Wei Lai Eur. Phys. J. D, 69 10 (2015) 231 Published online: 13 October 2015 DOI: 10.1140/epjd/e2015-60223-4