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Ghezzi, L.; et al. (2010-09), “Stellar Parameters and Metallicities of Stars Hosting Jovian and Neptunian Mass Planets: A Possible Dependence of Planetary Mass on Metallicity”, Astrophysical Journal720 (2): 1290-1302, Bibcode: 2010ApJ...720.1290G, doi:10.1088/0004-637X/720/2/1290
Mugrauer, M.; Neuhäuser, R.; Mazeh, T. (2007-07), “The multiplicity of exoplanet host stars. Spectroscopic confirmation of the companions GJ 3021 B and HD 27442 B, one new planet host triple-star system, and global statistics”, Astronomy and Astrophysics469 (2): 755-770, Bibcode: 2007A&A...469..755M, doi:10.1051/0004-6361:20065883
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Torres, C. A. O.; et al. (2006-12), “Search for associations containing young stars (SACY). I. Sample and searching method”, Astronomy and Astrophysics460 (3): 695-708, Bibcode: 2006A&A...460..695T, doi:10.1051/0004-6361:20065602