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Lagrange, A. -M.; et al. (2009-02), “Extrasolar planets and brown dwarfs around A-F type stars. VI. High precision RV survey of early type dwarfs with HARPS”, Astronomy & Astrophysics495 (1): 335-352, Bibcode: 2009A&A...495..335L, doi:10.1051/0004-6361:200810105
Haakonsen, Christian Bernt; Rutledge, Robert E. (2009-09), “XID II: Statistical Cross-Association of ROSAT Bright Source Catalog X-ray Sources with 2MASS Point Source Catalog Near-Infrared Sources”, Astrophysical Journal Supplement Series184 (1): 138-151, Bibcode: 2009ApJS..184..138H, doi:10.1088/0067-0049/184/1/138