R.O. Gray, C.J. Corbally, R.F. Garrison, M.T. McFadden i inni. Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I. „The Astronomical Journal”. 126 (4), s. 2048, 2003. DOI: 10.1086/378365. Bibcode: 2003AJ....126.2048G. (ang.).
harvard.edu
adsabs.harvard.edu
R.O. Gray, C.J. Corbally, R.F. Garrison, M.T. McFadden i inni. Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I. „The Astronomical Journal”. 126 (4), s. 2048, 2003. DOI: 10.1086/378365. Bibcode: 2003AJ....126.2048G. (ang.).