Ryan, Erin Lee; et al. (April 2012), "The Kilometer-Sized Main Belt Asteroid Population as Revealed by Spitzer", arXiv:1204.1116 [astro-ph.EP]
doi.org
Piironen, J.; et al. (March 1998), "Physical studies of asteroids. XXXII. Rotation periods and UBVRI-colours for selected asteroids", Astronomy and Astrophysics Supplement, 128 (3): 525–540, Bibcode:1998A&AS..128..525P, doi:10.1051/aas:1998393
harvard.edu
ui.adsabs.harvard.edu
Piironen, J.; et al. (March 1998), "Physical studies of asteroids. XXXII. Rotation periods and UBVRI-colours for selected asteroids", Astronomy and Astrophysics Supplement, 128 (3): 525–540, Bibcode:1998A&AS..128..525P, doi:10.1051/aas:1998393
Britt, D. T.; et al. (July 1992), "The Reflectance Spectrum of Troilite and the T-Type Asteroids", Meteoritics, 27 (3): 207, Bibcode:1992Metic..27Q.207B
