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Casagrande, Luca; Flynn, Chris; Bessell, Michael. M dwarfs: effective temperatures, radii and metallicities. Monthly Notices of the Royal Astronomical Society. September 2008, 389 (2): 585–607. Bibcode:2008MNRAS.389..585C. doi:10.1111/j.1365-2966.2008.13573.x.
Woitas, J.; Leinert, Ch.; Jahreiß, H.; Henry, T.; Franz, O. G.; Wasserman, L. H. The nearby M-dwarf system Gliese 866 revisited. Astronomy and Astrophysics. January 2000, 353: 253–256. Bibcode:2000A&A...353..253W. arXiv:astro-ph/9910411.
Schmitt, J.H.M.M.; Golub, L.; Harnden, F.R. Jr.; Maxson, C.W.; Rosner, R.; Vaiana, G.S. An Einstein Observatory X-ray survey of main-sequence stars with shallow convection zones. Astrophysical Journal. March 1985, 290 (Part 1): 307–320. Bibcode:1985ApJ...290..307S. doi:10.1086/162986.