X-ray source overdensities in Chandra distant cluster fields: A new probe to map the cosmic tapestry?N. Cappelluti, M. Cappi, M. Dadina, G. Malaguti, M. Branchesi, V. D'Elia and G. G. C. PalumboA&A, 430 1 (2005) 39-45DOI: https://doi.org/10.1051/0004-6361:20041534