Improving robustness of complex networks via the effective graph resistance Xiangrong Wang, Evangelos Pournaras, Robert E. Kooij and Piet Van Mieghem Eur. Phys. J. B, 87 9 (2014) 221 Published online: 24 September 2014 DOI: 10.1140/epjb/e2014-50276-0