1. [1] Hughes D. W., Green, D. W., Halley's first name: Edmond or Edmund, International Comet Quarterly 29 (2007) 7-14.
2. [2] Yeomans D. K., Comet Halley-The orbital motion, The Astronomical Journal, 82 (1977) 435-440.
3. [3] Yeomans D. K., Kiang T., The long-term motion of comet Halley, Monthly Notices of the Royal Astronomical Society, 197 (1981) 633-646.
4. [4] Stelzried C., Efron L., Ellis J., Halley comet missions, Nature, 321 (1986) 240-242.
5. [5] Giorgini J., Chodas P., Yeomans D., Orbit uncertainty and close-approach analysis capabilities of the horizons on-line ephemeris system, In Bulletin of the American Astronomical Society, 33 (2001) 1562.