SN 2007bi
Gal-Yam, A.; Mazzali, P.; Ofek, E. O.; et al., “Supernova 2007bi as a pair-instability explosion”, Nature 462 (7273): 624-627, arXiv:1001.1156, Bibcode: 2009Natur.462..624G, doi:10.1038/nature08579, PMID 19956255