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Did the solar system 'bounce' finish the dinosaurs? Cardiff University, 2. Mai 2008, abgerufen am 2. November 2017 (Pressemitteilung). Originalartikel: J. T. Wickramasinghe und W. M. Napier: Impact cratering and the Oort Cloud. In: Monthly Notices of the Royal Astronomical Society. Band387, Nr.1, 11. Juni 2008, doi:10.1111/j.1365-2966.2008.13098.x (Open Access).
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