David Bishop. "Bright Supernovae - 2008". supernovae.net (International Supernovae Network). Archived from the original on 2011-09-27. Retrieved 2010-06-07.
David Bishop. "Bright Supernovae - 2008". supernovae.net (International Supernovae Network). Archived from the original on 2011-09-27. Retrieved 2010-06-07.