@ARTICLE{Huang-1605-08633,
 author = "N. Aghanim, M. Ashdown, J. Aumont and others",
 title = "{Planck intermediate results. XLIX. Parity-violation constraints from polarization data}",
 journal = "{A&A}",
 year = {2016},
 month = {Dec},
 date = {12},
 volume = {596},
 pages = {A110},
 doi = {10.1051/0004-6361/201629018},
 archivePrefix = {arXiv},
 eprint = {1605.08633}
}