@inproceedings{Popa:2007lD,
  author = "Popa, Lucia Aurelia  and  Burigana, Carlo",
  title = "{Mapping the ionization sources with Planck polarization measurements}",
  doi = "10.22323/1.027.0073",
  booktitle = "Proceedings of CMB and Physics of the Early Universe {\textemdash} PoS(CMB2006)",
  year = 2007,
  volume = "027",
  pages = "073"
}