1. Consider IMC tuning to improve performance;Chien;Chem Eng Progr,1990
2. Control of high purity distillation columns;Fuentes;Ind Eng Chem Process Des Dev,1983
3. “Robust PID Tuning Strategy for Uncertain Plants Based on the Kharitonov Theorem”;Huang;ISA Transactions,2000
4. “Robust PID Controller Design for Non-minimum Phase Time Delay Systems,”;Huang;ISA Transactions,2001
5. “Graphical Computation of Gain and Phase Margin Specifications-oriented Robust PID Controllers for Uncertain Systems with Time-varying Delay”;Yuan-Jay;ISA transactions journal of process control,2011