%0 Journal Article %T Groups of units of integral group rings commensurable with direct products of free-by-free groups %A Eric Jespers %A Antonio Pita %A Angel del Rio %A Manuel Ruiz %A Pavel Zalesski %J Mathematics %D 2005 %I arXiv %X We classify the finite groups $G$ such that the group of units of the integral group ring ${\mathbb Z} G$ has a subgroup of finite index which is a direct product of free-by-free groups. %U http://arxiv.org/abs/math/0511472v3