Gaia Data Release 2 - Variable stars in the colour-absolute magnitude diagram Gaia Collaboration, L. Eyer, L. Rimoldini, M. Audard, R. I. Anderson, K. Nienartowicz, F. Glass, O. Marchal, M. Grenon, N. Mowlavi et al. (446 more) A&A, 623 (2019) A110 Published online: 13 March 2019 DOI: 10.1051/0004-6361/201833304