Rivera, Eugenio J. και άλλοι. (July 2010). «The Lick-Carnegie Exoplanet Survey: A Uranus-mass Fourth Planet for GJ 876 in an Extrasolar Laplace Configuration». The Astrophysical Journal719 (1): 890–899. doi:10.1088/0004-637X/719/1/890. Bibcode: 2010ApJ...719..890R.
Rivera, Eugenio J. και άλλοι. (July 2010). «The Lick-Carnegie Exoplanet Survey: A Uranus-mass Fourth Planet for GJ 876 in an Extrasolar Laplace Configuration». The Astrophysical Journal719 (1): 890–899. doi:10.1088/0004-637X/719/1/890. Bibcode: 2010ApJ...719..890R.