Qi Zhou Shengyuan Xu Bing Chen Yuming Chu <i>H</i><sub> INFINITY </sub> filtering for stochastic systems with time-varying delay. 235-244 2011 42 Int. J. Systems Science 1 http://dx.doi.org/10.1080/00207720903513327 db/journals/ijsysc/ijsysc42.html#ZhouXCC11