D. Prialnik and A. Bar-Nun (1992). "Crystallization of amorphous ice as the cause of Comet P/Halley's outburst at 14 AU". Astronomy and Astrophysics258 (2): L9–L12. Bibcode: 1992A&A...258L...9P.
D. K. Yeomans, J. Rahe and R. S. Freitag (1986). "The History of Comet Halley". Journal of the Royal Astronomical Society of Canada80. Bibcode: 1986JRASC..80...62Y.