Kurster, M.; və b. "The low-level radial velocity variability in Barnard's star (= GJ 699). Secular acceleration, indications for convective redshift, and planet mass limits". Astronomy & Astrophysics. 403 (3). 2003: 1077–1087. arXiv:astro-ph/0303528. Bibcode:2003A&A...403.1077K. doi:10.1051/0004-6361:20030396.
Kurster, M.; və b. "The low-level radial velocity variability in Barnard's star (= GJ 699). Secular acceleration, indications for convective redshift, and planet mass limits". Astronomy & Astrophysics. 403 (3). 2003: 1077–1087. arXiv:astro-ph/0303528. Bibcode:2003A&A...403.1077K. doi:10.1051/0004-6361:20030396.
Kurster, M.; və b. "The low-level radial velocity variability in Barnard's star (= GJ 699). Secular acceleration, indications for convective redshift, and planet mass limits". Astronomy & Astrophysics. 403 (3). 2003: 1077–1087. arXiv:astro-ph/0303528. Bibcode:2003A&A...403.1077K. doi:10.1051/0004-6361:20030396.