Tracing a high redshift cosmic web with quasar systems Maret Einasto, Erik Tago, Heidi Lietzen, Changbom Park, Pekka Heinämäki, Enn Saar, Hyunmi Song, Lauri Juhan Liivamägi and Jaan Einasto A&A, 568 (2014) A46 Published online: 12 August 2014 DOI: 10.1051/0004-6361/201424283