Sean N. Raymond, Eiichiro Kokubo, Alessandro Morbidelli, Ryuji Morishima, Kevin J. Walsh, "Terrestrial Planet Formation at Home and Abroad", Submitted on 5 Dec 2013 (v1), last revised 28 Jan 2014 (this version, v3)
Paolicchi, P.; Kryszczyńska, A. (2012). "Spin vectors of asteroids: Updated statistical properties and open problems". Planetary and Space Science. 73 (1): 70–74. Bibcode:2012P&SS...73...70P. doi:10.1016/j.pss.2012.02.017.
Paolicchi, P.; Kryszczyńska, A. (2012). "Spin vectors of asteroids: Updated statistical properties and open problems". Planetary and Space Science. 73 (1): 70–74. Bibcode:2012P&SS...73...70P. doi:10.1016/j.pss.2012.02.017.