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Makarov, Valeri V.; Berghea, Ciprian (2013). "Dynamical Evolution and Spin-Orbit Resonances of Potentially Habitable Exoplanets. The Case of Gj 667C". The Astrophysical Journal. 780 (2): 124. arXiv:1311.4831. doi:10.1088/0004-637X/780/2/124. S2CID118700510.
European Southern Observatory. Press information: The HARPS search for southern extra-solar planets. 11.24.2011. [1]Archived 2020-06-01 at the Wayback Machine
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Makarov, Valeri V.; Berghea, Ciprian (2013). "Dynamical Evolution and Spin-Orbit Resonances of Potentially Habitable Exoplanets. The Case of Gj 667C". The Astrophysical Journal. 780 (2): 124. arXiv:1311.4831. doi:10.1088/0004-637X/780/2/124. S2CID118700510.
European Southern Observatory. Press information: The HARPS search for southern extra-solar planets. 11.24.2011. [1]Archived 2020-06-01 at the Wayback Machine