a . A. R. King and M. G. Watson, “The Shortest Period Binary Star?” Nature, Vol. 323, 4 September 1986, p. 105.
u Dietrick E. Thomsen, “A Dizzying Orbit for a Binary Star,” Science News, Vol. 130, 11 October 1986, p. 231.
u “Ultrafast Binary Star,” Sky & Telescope, February 1987, p. 154.
b . Jonathan Eberhart, “Now You See It, Now You Don’t,” Science News, Vol. 135, 7 January 1989, p. 13.
u Patrick Moore, The New Atlas of the Universe (New York: Arch Cape Press, 1988), p. 176.