@TechReport{GieslThiemannSchneiderKamp05, author = "J\"urgen Giesl and Ren\'e Thiemann and Peter Schneider-Kamp", title = "Proving and Disproving Termination of Higher-Order Functions", institution = "RWTH Aachen", year = "2005", number = "AIB-2005-03", month = march, url = "http://aib.informatik.rwth-aachen.de/2005/2005-03.ps.gz" }