Yang Fan Shuping He Fei Liu PD-Type Sampled-Data Iterative Learning Control for Nonlinear Systems with Time Delays and Uncertain Disturbances. 201-205 2009 CIS (1) http://doi.ieeecomputersociety.org/10.1109/CIS.2009.211 conf/cis/2009-1 db/conf/cis/cis2009-1.html#FanHL09