Cyclone Swirls near Martian North Pole. [2006-11-01]. (原始内容存档于2012-02-12). Laser provides first 3-D View of Mars' North Pole. [2006-11-01]. (原始内容存档于2006-10-17)
David Brand and Ray Villard. Colossal cyclone swirling near Martian north pole is observed by Cornell-led team on Hubble telescope. Cornell News. 19 May