1. Copatterns
2. Wellfounded recursion with copatterns
3. The game of life;Conway John;Scientific American,1970
4. The Coq development team. 2009. The Coq proof assistant reference manual. LogiCal Project. http://coq.inria.fr/doc/ The Coq development team. 2009. The Coq proof assistant reference manual. LogiCal Project. http://coq.inria.fr/doc/
5. Conal Eliott. 2008. Sequences streams and segments. (2008). http://conal.net/blog/posts/sequences-streams-and-segments Conal Eliott. 2008. Sequences streams and segments. (2008). http://conal.net/blog/posts/sequences-streams-and-segments