1. L. E. Anderson, 1974, A Photometric Study of Pluto and Satellites of the Outer Planets, Univ. of Indiana
2. High-spatial-resolution near-infrared photometric imaging of the uranian and neptunian systems;Baines;Bull. Am. Astron. Soc.,1995
3. WFPC2 flat field calibration;Biretta,1995
4. WFPC2 Instrument Handbook, Version 4.0;Biretta,1966
5. Application of photometric models to asteroids;Bowell,1989