Mapping the tilt of the Milky Way bulge velocity ellipsoids with ARGOS and Gaia DR2. - Simion, Iulia T; Shen, Juntai; Koposov, Sergey E; Ness, Melissa; Freeman, Kenneth; Bland-Hawthorn, Joss; Lewis, Geraint F (Monthly Notices of the Royal Astronomical Society, 2021)