@CONFERENCE\{IMM2005-04351, author = "M. Fr{\"{a}}nzle and M. R. Hansen", title = "A Robust Interpretation of Duration Calculus", year = "2005", pages = "257-271", booktitle = "Theoretical Aspects of Computing - {ICTAC} 2005", volume = "3722", series = "LNCS", editor = "Dang Van Hung and Martin Wirsing", publisher = "Springer-Verlag", organization = "", address = "", url = "http://www2.compute.dtu.dk/pubdb/pubs/4351-full.html" }