Stern, S.A. (2006). "The Positions, Colors, and Photometric Variability of Pluto's Small Satellites from HST Observations 2005-2006". Astronomical Journal. Mutchler, M.J.; Weaver, H. A.; and Steffl, A.J.: submitted. (Final preprint)
Stern, Alan (15 May 2005). "Background Information Regarding Our Two Newly Discovered Satellites of Pluto". Hal Weaver (JHU APL), Max Mutchler (STScI), Andrew Steffl (SwRI), Bill Merline (SwRI), Marc Buie (Lowell Observatory), John Spencer (SwRI), Eliot Young (SwRI), and Leslie Young (SwRI). Planetary Science Directorate (Boulder Office). Retrieved 2007-11-10.