@Article{TAC-12_Carrasco-Heath-Li-Lanzon,
 author       = "Carrasco, J. and Heath, W. P. and Li, G. and Lanzon, A.",
 title        = "Comments on ``{O}n the existence of stable, causal multipliers for systems with
                 slope-restricted nonlinearities''",
 journal      = "{IEEE} Transactions on Automatic Control",
 volume       = 57,
 number       = 9,
 pages        = "2422-2428",
 doi          = "10.1109/tac.2011.2179848",
 month        = sep,
 year         = 2012}