Life on Mars?Diarsipkan 2006-02-23 di Wayback Machine. - Geological and biological processes observed on Earth provide hunky-dory explanations for methane on Mars, Martin Baucom, American Scientist, March-April 2006.
Mumma, M. J.; Novak, R. E.; DiSanti, M. A.; Bonev, B. P., "A Sensitive Search for Methane on Mars" (abstract only). American Astronomical Society, DPS meeting #35, #14.18.
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Life on Mars?Diarsipkan 2006-02-23 di Wayback Machine. - Geological and biological processes observed on Earth provide hunky-dory explanations for methane on Mars, Martin Baucom, American Scientist, March-April 2006.