Doğan, T., Sumino, H., Nagao, K., Notsu, K., Tuncer, M.K., Çelik, C., “Adjacent releases of mantle helium and soil CO2 from active faults: Observations from the Marmara region of the North Anatolian fault zone, Turkey”, Geochemistry Geophysics Geosystems, 10, 2009.