1. Google picasa. 2011. 〈http://picasa.google.com〉.
2. Flickr. 2011. 〈http://www.flickr.com〉.
3. Animation, visualization, and interaction in cs 1 assignments;Astrachan,1998
4. Teaching two-dimensional array concepts in java with image processing examples;Burger;SIGCSE Bull,2003
5. τεχνη: a first step;Davis,2004