@article { refId1,
	title = {Planck 2018 results. III. High Frequency Instrument data processing and frequency maps},
	journal = {A\&A},
	year = {2019},
	note = {Forthcoming article},
	doi = {10.1051/0004-6361/201832909},
	url = {https://doi.org/10.1051/0004-6361/201832909},
	author = {Planck Collaboration et al.}
}