@Article{TAC-10_Xiong-Petersen-Lanzon,
 author       = "Xiong, J. and Petersen, I. R. and Lanzon, A.",
 title        = "A negative imaginary lemma and the stability of interconnections of
                 linear negative imaginary systems",
 journal      = "{IEEE} Transactions on Automatic Control",
 volume       = 55,
 number       = 10,
 pages        = "2342-2347",
 doi          = "10.1109/tac.2010.2052711",
 month        = oct,
 year         = 2010}