Drakes ligning: Forskelle mellem versioner
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==Referencer==
<div class="references-small">
[http://xxx.lanl.gov/abs/astro-ph/0610321] Persic og Rephaeli: "Galactic star-formation rates gauged by stellar end-products"<br>
[http://xxx.lanl.gov/abs/astro-ph/0602101] Beacom: "The Cosmic Stellar Birth and Death Rates"<br>
[http://xxx.lanl.gov/abs/astro-ph/0006424] Hardin & al.: "Type Ia supernova rate at z ~ 0.1"<br>
[http://xxx.lanl.gov/abs/astro-ph/0405211] Blanc & al.: "Type Ia supernova rate at a redshift of ~ 0.1"<br>
[[Kategori:Ligninger]]
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