J. C. U. O. Southampton
发表
San Diego State University,
Universities Space Research Association,
U. S. Andrews,
2001,
astro-ph/0110332.
T. Maccarone,
Mit,
D. Russell,
2007,
0705.3594.
Spain.,
Instituto de Astrof'isica de Canarias,
UK.,
2003,
astro-ph/0312149.