«VSX : Detail for VZ Pic». The International Variable Star Index. American Association of Variable Star Observers (AAVSO). Consultado em 16 de janeiro de 2015
Anglada-Escudé, G.; et al. (setembro de 2014). «Two planets around Kapteyn's star: a cold and a temperate super-Earth orbiting the nearest halo red dwarf». Monthly Notices of the Royal Astronomical Society: Letters. 443 (1). pp. L89–L93. Bibcode:2014MNRAS.443L..89A. doi:10.1093/mnrasl/slu076
Kotoneva, E.; Innanen, K.; Dawson, P. C.; Wood, P. R.; De Robertis, M. M (agosto de 2005). «A study of Kapteyn's star». Astronomy and Astrophysics. 438 (3). pp. 957–962. Bibcode:2005A&A...438..957K. doi:10.1051/0004-6361:20042287 !CS1 manut: Nomes múltiplos: lista de autores (link)
Neves, V.; et al. (agosto de 2014). «Metallicity of M dwarfs. IV. A high-precision [Fe/H] and Teff technique from high-resolution optical spectra for M dwarfs». Astronomy & Astrophysics. 568. pp. A121, 22. Bibcode:2014A&A...568A.121N. doi:10.1051/0004-6361/201424139
Houdebine, E. R (setembro de 2010). «Observation and modelling of main-sequence star chromospheres - XIV. Rotation of dM1 stars». Monthly Notices of the Royal Astronomical Society. 407 (3). pp. 1657–1673. Bibcode:2010MNRAS.407.1657H. doi:10.1111/j.1365-2966.2010.16827.x
Anglada-Escudé, G.; et al. (setembro de 2014). «Two planets around Kapteyn's star: a cold and a temperate super-Earth orbiting the nearest halo red dwarf». Monthly Notices of the Royal Astronomical Society: Letters. 443 (1). pp. L89–L93. Bibcode:2014MNRAS.443L..89A. doi:10.1093/mnrasl/slu076
Kotoneva, E.; Innanen, K.; Dawson, P. C.; Wood, P. R.; De Robertis, M. M (agosto de 2005). «A study of Kapteyn's star». Astronomy and Astrophysics. 438 (3). pp. 957–962. Bibcode:2005A&A...438..957K. doi:10.1051/0004-6361:20042287 !CS1 manut: Nomes múltiplos: lista de autores (link)
Neves, V.; et al. (agosto de 2014). «Metallicity of M dwarfs. IV. A high-precision [Fe/H] and Teff technique from high-resolution optical spectra for M dwarfs». Astronomy & Astrophysics. 568. pp. A121, 22. Bibcode:2014A&A...568A.121N. doi:10.1051/0004-6361/201424139
Houdebine, E. R (setembro de 2010). «Observation and modelling of main-sequence star chromospheres - XIV. Rotation of dM1 stars». Monthly Notices of the Royal Astronomical Society. 407 (3). pp. 1657–1673. Bibcode:2010MNRAS.407.1657H. doi:10.1111/j.1365-2966.2010.16827.x