Modified f(G) gravity models with curvature–matter coupling Yue-Yue Zhao, Ya-Bo Wu, Jian-Bo Lu, Zhuo Zhang, Wei-Li Han and Liang-Liang Lin Eur. Phys. J. C, 72 3 (2012) 1924 Published online: 07 March 2012 DOI: 10.1140/epjc/s10052-012-1924-2