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Ammler-von Eiff, M.; Reiners, A (junho de 2012). «New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars?». Astronomy & Astrophysics. 542. pp. A116, 31 pp. Bibcode:2012A&A...542A.116A. doi:10.1051/0004-6361/201118724
Casagrande, L.; et al. (junho de 2011). «New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey». Astronomy & Astrophysics. 530. pp. A138. Bibcode:2011A&A...530A.138C. doi:10.1051/0004-6361/201016276