SETI Institute - Long-Lost, Dangerous Asteroid Is Found Again. [s.l.] : Seti.org. [Cit. 2010-12-03]. Dostupné online. Archivované 2011-06-15 z originálu.
web.archive.org
SETI Institute - Long-Lost, Dangerous Asteroid Is Found Again. [s.l.] : Seti.org. [Cit. 2010-12-03]. Dostupné online. Archivované 2011-06-15 z originálu.