@article { refId2,
	title = {Planck 2018 results. II. Low Frequency Instrument data processing},
	journal = {A\&A},
	year = {2019},
	note = {Forthcoming article, Accepted: 04 September 2018},
	doi = {10.1051/0004-6361/201833293},
	url = {https://doi.org/10.1051/0004-6361/201833293},
	author = {Planck Collaboration et al.}
}