Comparison between LSST and Gaia
https://www.aanda.org/component/toc/?task=topic&id=922
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Gaia Data Release 2 - Photometric content and validation https://www.aanda.org/articles/aa/full_html/2018/08/aa32756-18/aa32756-18.html
Note that the passband conversion coefficients in Table A.2 of Gaia Data Release 2 : Photometric content and validation, should those in the official A&A paper. Early versions on astro-ph had various bugs in them. - Private communication, Dafydd Wyn Evans -
Gaia Data Release 2 - The astrometric solution https://www.aanda.org/articles/aa/full_html/2018/08/aa32727-18/aa32727-18.html