A. Stern. Making Old Horizons New. The PI's Perspective. Johns Hopkins University Applied Physics Laboratory. November 1, 2006 [2007-02-12]. (原始内容存档于2011-08-20).
A. Stern. Making Old Horizons New. The PI's Perspective. Johns Hopkins University Applied Physics Laboratory. November 1, 2006 [2007-02-12]. (原始内容存档于2011-08-20).