@Inproceedings{ecc-07_Lanzon-Petersen,
 author       = "Lanzon, A. and Petersen, I. R.",
 title        = "A modified positive-real type stability condition",
 booktitle    = "Proceedings of the 2007 European Control Conference",
 address      = "Kos, Greece",
 pages        = "3912-3918",
 month        = jul,
 year         = 2007}