Modified f(G) gravity models with curvature–matter couplingYue-Yue Zhao, Ya-Bo Wu, Jian-Bo Lu, Zhuo Zhang, Wei-Li Han and Liang-Liang LinEur. Phys. J. C, 72 3 (2012) 1924DOI: https://doi.org/10.1140/epjc/s10052-012-1924-2