Aschenbach, Bernd (12 листопада 1998). Discovery of a young nearby supernova remnant. Letters to Nature. 396 (6707): 141—142. Bibcode:1998Natur.396..141A. doi:10.1038/24103.
Iyudin, A. F. та ін. (November 1998). Emission from 44Ti associated with a previously unknown Galactic supernova. Nature. 396 (6707): 142—144. Bibcode:1998Natur.396..142I. doi:10.1038/24106.
Aschenbach, Bernd (12 листопада 1998). Discovery of a young nearby supernova remnant. Letters to Nature. 396 (6707): 141—142. Bibcode:1998Natur.396..141A. doi:10.1038/24103.
Iyudin, A. F. та ін. (November 1998). Emission from 44Ti associated with a previously unknown Galactic supernova. Nature. 396 (6707): 142—144. Bibcode:1998Natur.396..142I. doi:10.1038/24106.