Kaspi, V. M.; Roberts, M. E.; Vasisht, G.; Gotthelf, E. V.; Pivovaroff, M.; Kaawai, N. (10 October 2001). ”Chandra X-Ray Observations of G11.2–0.3: Implications for Pulsar Ages”. The Astrophysical Journal 560: sid. 372. doi:10.1086/322515. Bibcode: 2001ApJ...560..371K. ”The supernova remnant SNR G11.2–0.3 has received considerable observational attention because of the possibility that it is associated with a 'guest star' witnessed by Chinese astronomers in the year A.D. 386 (Clark & Stephenson 1977).”.
Kaspi, V. M.; Roberts, M. E.; Vasisht, G.; Gotthelf, E. V.; Pivovaroff, M.; Kaawai, N. (10 October 2001). ”Chandra X-Ray Observations of G11.2–0.3: Implications for Pulsar Ages”. The Astrophysical Journal 560: sid. 372. doi:10.1086/322515. Bibcode: 2001ApJ...560..371K. ”The supernova remnant SNR G11.2–0.3 has received considerable observational attention because of the possibility that it is associated with a 'guest star' witnessed by Chinese astronomers in the year A.D. 386 (Clark & Stephenson 1977).”.