Yun Chen 0008 Anke Xue Renquan Lu Junhong Wang On Delay-Dependent Robust Stability for Uncertain Systems with Time-Varying Delays. 1561-1564 2007 CCA https://doi.org/10.1109/CCA.2007.4389459 conf/IEEEcca/2007 db/conf/IEEEcca/IEEEcca2007.html#ChenXLW07