1. Fernando, Chrisantha and Sampsa Sojakka. 2003. Pattern recognition in a bucket. In European conference on artificial life, 588–597. Springer
2. van Leeuwen, Jan. 1990. Handbook of theoretical computer science: Algorithms and complexity. Elsevier
3. Ralston, Anthony, Edwin D. Reilly, and David Hemmendinger. 2000. Encyclopedia of computer science. Nature Publishing Group.
4. Reilly, Edwin D. 2003. Milestones in computer science and information technology. Greenwood Publishing Group
5. Tucker, Allen B. 2004. Computer science handbook. CRC Press