Setzer, A., Abel, A., Pientka, B., & Thibodeau, D. (2013). Copatterns: Programming infinite structures by observations. Proceedings of the 40th annual ACM SIGPLAN-SIGACT symposium on Principles of programming languages, 48(1), pp. 27-38. doi:10.1145/2429069.2429075

Setzer, Anton, Andreas Abel, Brigitte Pientka, and David Thibodeau. "Copatterns: Programming Infinite Structures By Observations." Proceedings of the 40th Annual ACM SIGPLAN-SIGACT Symposium On Principles of Programming Languages 48, no. 1 (2013): 27-38.

Setzer, Anton, Andreas Abel, Brigitte Pientka, and David Thibodeau. "Copatterns: Programming Infinite Structures By Observations." Proceedings of the 40th Annual ACM SIGPLAN-SIGACT Symposium On Principles of Programming Languages 48.1 (2013): 27-38.