1. Chernetenko, Yu.A., 1992. The motion of comet Encke. Abstract of dissertation. Pulkovo Observatory, Saint Petersburg, pp. 1–12.
2. Comet 19P/Borrelly orbit determination for the DS1 flyby;Chesley;Bull. Am. Astron. Soc.,2001
3. The aging of comets Halley and Encke;Ferrín;Astron. Astrophys.,1988
4. Secular light curve of 2P/Encke, a comet active at aphelion;Ferrín;Icarus,2008
5. JPL’s on-line solar system data service;Giorgini;Bull. Am. Astron. Soc.,1996