Roy E. Kilgard
发表
Michael J. Ward,
Robert S. Warwick,
L. P. Jenkins,
2006
.
Jonathan C. McDowell,
Peter Marcus Garnavich,
Peter M. Challis,
2001
.
Jonathan C. McDowell,
Thomas Matheson,
Saurabh Jha,
2001,
astro-ph/0103081.
Philip Kaaret,
Roy E. Kilgard,
Andreas Zezas,
2003
.