Towards understanding the structure of voids in the cosmic web J. Einasto, I. Suhhonenko, G. Hütsi, E. Saar, M. Einasto, L. J. Liivamägi, V. Müller, A. A. Starobinsky, E. Tago and E. Tempel A&A, 534 (2011) A128 Published online: 19 October 2011 DOI: 10.1051/0004-6361/201117248