Astronomical forensics pins down dinosaur killer.
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References
Bottke, W.F., Vokrouhlicky, D., Nesvorny, D., et al. Nature 449, 48-53 (2007).
Farley, K.A., et al. Nature 439, 295-297 (2007).
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Brumfiel, G. Killer asteroid fingered. Nature (2007). https://doi.org/10.1038/news070903-9
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DOI: https://doi.org/10.1038/news070903-9