Influence of assortativity and degree-preserving rewiring on the spectra of networksP. Van Mieghem, H. Wang, X. Ge, S. Tang and F. A. KuipersEur. Phys. J. B, 76 4 (2010) 643-652DOI: https://doi.org/10.1140/epjb/e2010-00219-x