@article{Juszkiewicz:2009,
author
=
"R.Juszkiewicz and V.Springel and R.Durrer",
title
=
"Dynamics of pairwise motions",
journal
=
"Astrophysical Journal",
number
=
"no 518",
pages
=
"L25--L28",
year
=
"1999",
}