HD 40307 d (Polish Wikipedia)

Analysis of information sources in references of the Wikipedia article "HD 40307 d" in Polish language version.

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arxiv.org

The HARPS search for southern extra-solar planets. XIII. A planetary system with 3 Super-Earths (4,2, 6,9, & 9,2 Earth masses). arxiv.org. [dostęp 2010-07-28]. (ang.).

bbc.co.uk

news.bbc.co.uk

Trio of 'super-Earths' discovered. BBC. [dostęp 2010-07-28]. (ang.).