@inproceedings{SPM403, author = "Björn S. Rüffer and Christopher M. Kellett and Steven R. Weller", title = "Integral input-to-state stability of interconnected iISS systems by means of a lower-dimensional comparison system", booktitle = "Proc. Joint 48th IEEE Conf. Decision and Control and 28th Chinese Control Conf.", year = 2009, pages = "638-643", month = "dec" }