Delfosse, X.; Forveille; Ségransan; Beuzit; Udry; Perrier; Mayor: Accurate masses of very low mass stars: IV Improved mass-luminosity relations. arxiv:astro-ph/0010586.
Pasinetti Fracassini, L. E. et al.: Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third Edition - Comments and Statistics. arxiv:astro-ph/0012289.
harvard.edu
ui.adsabs.harvard.edu
Henry, Todd J. et al.: The solar neighborhood, 1: Standard spectral types (K5-M8) for northern dwarfs within eight parsecs. bibcode:1994AJ....108.1437H.