On the rich-club effect in dense and weighted networksV. Zlatic, G. Bianconi, A. Díaz-Guilera, D. Garlaschelli, F. Rao and G. CaldarelliEur. Phys. J. B, 67 3 (2009) 271-275DOI: https://doi.org/10.1140/epjb/e2009-00007-9