Mayall, N. U.; Oort, J. H. (1942). “Further Data Bearing on the Identification of the Crab Nebula with the Supernova of 1054 A.D. Part II. The Astronomical Aspects”. Publications of the Astronomical Society of the Pacific54: 95. Bibcode: 1942PASP...54...95M. doi:10.1086/125410. ISSN0004-6280.
Brecher, Kenneth et al. (1978). “Report of a Near Eastern Sighting of the Crab Supernova Explosion”. Bulletin of the American Astronomical Society10: 424-425. Bibcode: 1978BAAS...10..424B.
Mayall, N. U.; Oort, J. H. (1942). “Further Data Bearing on the Identification of the Crab Nebula with the Supernova of 1054 A.D. Part II. The Astronomical Aspects”. Publications of the Astronomical Society of the Pacific54: 95. Bibcode: 1942PASP...54...95M. doi:10.1086/125410. ISSN0004-6280.
Mayall, N. U.; Oort, J. H. (1942). “Further Data Bearing on the Identification of the Crab Nebula with the Supernova of 1054 A.D. Part II. The Astronomical Aspects”. Publications of the Astronomical Society of the Pacific54: 95. Bibcode: 1942PASP...54...95M. doi:10.1086/125410. ISSN0004-6280.