1. Bertot, Y.: Coinduction in Coq. In: Lecture Notes of TYPES Summer School 2005, Sweden, August 15-26, 2005, vol. II (2005),
http://www.cs.chalmers.se/Cs/Research/Logic/TypesSS05/Extra/bertot.pdf
2. Buchholz, W.: A term calculus for (co-)recursive definitions on streamlike data-structures. Annals of Pure and Applied Logic 136, 75–90 (2005)
3. Ciaffaglione, A., Gianantonio, D.: A certified, corecursive implementation of exact real numbers. Theoretical Computer Science 351, 39–51 (2006)
4. Lecture Notes in Computer Science;J. Chirimar,1992
5. Ciaffaglione, A.: Certified reasoning on real numbers and objects in co-inductive type theory. Ph.D Thesis. Department of Mathematics and Computer Science, University of Udine, and INPL-ENSMNS, Nancy, France (2003)