The COMBS survey – I. Chemical origins of metal-poor stars in the Galactic bulge. - Lucey, Madeline; Hawkins, Keith; Ness, Melissa; Asplund, Martin; Bensby, Thomas; Casagrande, Luca; Feltzing, Sofia; Freeman, Kenneth C; Kobayashi, Chiaki; Marino, Anna F (Monthly Notices of the Royal Astronomical Society, 2019)