This is my contribution to the proceedings of the 28th Texas Symposium on Relativistic Astrophysics held December 13—18, 2015, in Geneva, Switzerland. It is based on a paper about the general question of the influence of locally inhomogeneous cosmological models on the termination of cosmological parameters and one discussing what can be learned about the dark-matter distribution given the fact that the data seem to prefer a very homogeneous universe (with regard to most, i.e. dark, matter)
The links below point to one file containing the complete text, all figures and tables etc. (This is also available at the "contribution" link above, where the slides of the talk---less text and more plots---are also available.)
As are most of my publications this is available in more than one form: