A low-Mach Roe-type solver for the Euler equations allowing for gravity source terms Wasilij Barsukow, Philipp V.F. Edelmann, Christian Klingenberg and Friedrich K. Röpke ESAIM: ProcS, 58 (2017) 27-39 Published online: 08 November 2017 DOI: 10.1051/proc/201758027