Bus, S. J. (24 januari 2002). ”Phase II of the Small Main-belt Asteroid Spectroscopy Survey: A feature-based taxonomy”. Icarus "158" (1): ss. 146–177. doi:10.1006/icar.2002.6856. Bibcode: 2002Icar..158..146B.
Bus, S. J. (24 januari 2002). ”Phase II of the Small Main-belt Asteroid Spectroscopy Survey: A feature-based taxonomy”. Icarus "158" (1): ss. 146–177. doi:10.1006/icar.2002.6856. Bibcode: 2002Icar..158..146B.