1. Methane–hydrogen gas seeps, Zambales Ophiolite, Philippines: deep or shallow origin?;Abrajano;Chem. Geol.,1988
2. Abramov, O., 2009. Modeling hydrothermal activity associated with martian impact craters: an overview. Workshop on Modeling Martian Hydrous Environments, abstract no. 4029.
3. Impact-induced hydrothermal activity on early Mars;Abramov;J. Geophys. Res.,2005
4. Allen, C.C., Oehler, D.Z., 2005. Thinking like a wildcatter—prospecting for methane in Arabia Terra, Mars. In: Proceedings of the 36th LPSC, abstract no. 1398.
5. A case for ancient springs in Arabia Terra, Mars;Allen;Astrobiology,2008