A large-scale study of the world wide web: network correlation functions with scale-invariant boundaries Guillermo A. Ludueña, Harald Meixner, Gregor Kaczor and Claudius Gros Eur. Phys. J. B, 86 8 (2013) 348 Published online: 05 August 2013 DOI: 10.1140/epjb/e2013-31121-6