Primordial environment of super massive black holes: large-scale galaxy overdensities around z ~ 6 quasars with LBTL. Morselli, M. Mignoli, R. Gilli, C. Vignali, A. Comastri, E. Sani, N. Cappelluti, G. Zamorani, M. Brusa, S. Gallozzi and E. VanzellaA&A, 568 (2014) A1DOI: https://doi.org/10.1051/0004-6361/201423853
