D. Riddle
发表
C. Watson,
M. Schoenball,
B. Alessi,
2005,
gr-qc/0511021.
G. Jacoby,
A. Acker,
Q. Parker,
2009,
Publications of the Astronomical Society of Australia.
R. Ciardullo,
G. Jacoby,
S. Howell,
2011,
Proceedings of the International Astronomical Union.