Back to matchesWe found a matchYour institution may have rights to this item. Sign in to continue.TitleReply to comment by Fries on 'Cometary origin of atmospheric methane variations on Mars unlikely'.AuthorsRoos-Serote, M.; Atreya, S. K.; Webster, C. R.; Mahaffy, P. R.PublicationJournal of Geophysical Research. Planets, 2017, Vol 122, Issue 4, p787ISSN2169-9097Publication typeArticleDOI10.1002/2017JE005259