Cristina Borralleras Albert Rubio Orderings and Constraints: Theory and Practice of Proving Termination. 28-43 2007 conf/birthday/2007jouannaud Rewriting, Computation and Proof http://dx.doi.org/10.1007/978-3-540-73147-4_2 db/conf/birthday/jouannaud2007.html#BorrallerasR07