1. Null space method for selecting optimal measurement combinations as controlled variables;Alstad;Ind. Eng. Chem. Res.,2007
2. Cao, Y. (1995). Control Structure Selection for Chemical Processes using Input-Output Controllability Analysis. Ph.D. thesis, the University of Exeter.
3. An Input Pre-Screening Technique for Control Structure Selection;Cao;Computers and Chemical Engineering,1997
4. Bidirectional branch and bound for controlled variable selection: Part I;Cao;Principles and minimum singular value criterion. Comput. Chem. Engng.,2008
5. Output effectiveness and scaling sensitivity for secondary measurement selection;Cao;Transaction of IChemE, Part A,1998