J. Stauffer
发表
A. Klutsch,
A. Bragaglia,
T. Zwitter,
2016,
1604.07580.
William C. Keel,
W. Keel,
R. Schild,
1983
.
A. Burrows,
C. J. Grillmair,
Ball Aerospace,
2007
.
E. Young,
Jesus Hernandez,
E. Young,
2007,
astro-ph/0701476.