S. Andreon. (2011)cite arxiv:1112.3652Comment: Largely based on an invited talk at ISI 2011 - 58th World Statistics Congress, Dublin. To appear as chapter 2 of the upcoming "Astrostatistical Challenges for the New Astronomy" book (ed. J. Hilbe) for Springer Series on Astrostatistics.
S. Troitsky. (2011)cite arxiv:1112.4515Comment: 49 pages, 20 figures. A review lecture for physics students and general physicists, to be published in Physics Uspekhi in January 2012.