[Shape-univ] point mass in expanding universe papers

hi shape-univ, An interesting pair of papers: http://arxiv.org/abs/1104.4447 The effect of a massive object on an expanding universe Authors: Roshina Nandra, Anthony N. Lasenby, Michael P. Hobson Effect of exp univ on object: http://arxiv.org/abs/1104.4458 pozdr boud