{"id":"zahnle2011there","DOI":"10.1016/j.icarus.2010.11.027","URL":"https://doi.org/10.1016/j.icarus.2010.11.027","type":"article-journal","title":"Is there methane on Mars?","author":[{"given":"Kevin","family":"Zahnle"},{"given":"Richard S.","family":"Freedman"},{"given":"David C.","family":"Catling"}],"issued":{"date-parts":[[2011]]},"year-text":"2011","container-title":"Icarus 212(2), 493–503","catalog-key":"SRC0D7EXKYC3V8P"}