Yueyang Li Qiang Ding Huihong Zhao Comments on "H<sub> INFINITY </sub> filtering for discrete-time systems with randomly varying sensor delays". 1783 2009 45 Automatica 7 http://dx.doi.org/10.1016/j.automatica.2009.01.022 db/journals/automatica/automatica45.html#LiDZ09