H. CfA
发表
M. A. Strauss,
Princeton,
W. M. Wood-Vasey,
2012,
1207.7326.
U. London,
N. Bastian,
B. Ercolano,
2008,
Proceedings of the International Astronomical Union.
Gary J. Melnick,
Johns Hopkins University,
Martin Harwit,
1998,
astro-ph/9802346.
M. Gieles,
E. Rosolowsky,
Moscow,
2007,
0706.0495.
Davis,
B. M'enard,
J. University,
2013,
1303.0292.
Harvard-Smithsonian CfA,
L. Kewley,
M. Dopita,
2002,
astro-ph/0206495.
S. Chatterjee,
H. CfA,
Madison,
2008,
Publications of the Astronomical Society of Australia.
Seattle,
Korea,
Institute for Astronomy,
2008,
0809.1058.
Belgium,
Madrid,
O. Nacional,
2010,
1012.3456.