@Article{TAC-11_Patra-Lanzon,
 author       = "Patra, S. and Lanzon, A.",
 title        = "Stability analysis of interconnected systems with `mixed'
                 negative-imaginary and small-gain properties",
 journal      = "{IEEE} Transactions on Automatic Control",
 volume       = 56,
 number       = 6,
 pages        = "1395-1400",
 doi          = "10.1109/tac.2011.2122670",
 month        = jun,
 year         = 2011}