Manganese oxides as high-pε redox buffers on Mars.
Blackburn Thomas R. (1984) Icarus.Viking Gas Exchange Reaction: Simulation on UV-Irradiated Manganese Dioxide Substrate.
Blackburn Thomas R. (1979) J. Geophys. Res..Geological features indicative of processes related to the hematite formation in Meridiani Planum and Aram Chaos, Mars: a comparison with diagenetic hematite deposits in southern Utah, USA.
Ormö Jens (2004) Icarus.