hi cos-top, Cosmic topology seems to be turning into a hot topic: we have at least eight papers - a mix of observational and theoretical papers - listed by the ADS for 2013. Feel free to reply to add any missing papers to this list! http://cdsads.u-strasbg.fr/abs/2013arXiv1306.2737F A search for nontoroidal topological lensing in the Sloan Digital Sky Survey quasar catalog Authors: Fujii, Hirokazu; Yoshii, Yuzuru http://cdsads.u-strasbg.fr/abs/2013arXiv1305.5576B Solving the Einstein constraints in periodic spaces with a multigrid approach Authors: Bentivegna, Eloisa http://cdsads.u-strasbg.fr/abs/2013arXiv1304.1811A The Topology and Size of the Universe from CMB Temperature and Polarization Data Authors: Aslanyan, Grigor; Manohar, Aneesh V.; Yadav, Amit P. S. http://cdsads.u-strasbg.fr/abs/2013arXiv1303.5086P Planck 2013 results. XXVI. Background geometry and topology of the Universe Authors: Planck Collaboration http://cdsads.u-strasbg.fr/abs/2013arXiv1303.4226A A search for cosmic topology in the final WMAP data Authors: Aurich, Ralf; Lustig, Sven http://cdsads.u-strasbg.fr/abs/2013arXiv1302.6537B Wave computation on the Poincar\'e dodecahedral space Authors: Bachelot-Motet, Agnes http://cdsads.u-strasbg.fr/abs/2013arXiv1302.4425R Deep redshift topological lensing: strategies for the T^3 candidate Authors: Roukema, Boudewijn F.; France, Martin J.; Kazimierczak, Tomasz A.; Buchert, Thomas http://cdsads.u-strasbg.fr/abs/2013PhRvD..87d3521R Topological implications of inhomogeneity Authors: Roukema, Boudewijn F.; Blanloeil, Vincent; Ostrowski, Jan J. Cheers Boud