Artyom Novichonok (2011-09-23). "Light Curve for C/2010 X1". Light curves for comets (made in Comet for Win). Archived from the original on 2011-10-15. Retrieved 2011-09-25.
Artyom Novichonok (2011-09-23). "Light Curve for C/2010 X1". Light curves for comets (made in Comet for Win). Archived from the original on 2011-10-15. Retrieved 2011-09-25.