Characteristic density contrasts in the evolution of superclusters. The case of A2142 superclusterMirt Gramann, Maret Einasto, Pekka Heinämäki, Pekka Teerikorpi, Enn Saar, Pasi Nurmi and Jaan EinastoA&A, 581 (2015) A135DOI: https://doi.org/10.1051/0004-6361/201526768
