1. O. Lang, Introduction to Economic Cybernetics. Pergaman Press, Oxford, (1970).
2. B. Tang, C. Cheng and M. Zhong, the Theory and Method of Robust Economic Cybernetics. China Textile University Press, Shanghai, (2000).
3. M. Zhong, B. Tang and X. Huang, Analysis of provincial macro-economic model and its robust h-infinite control strategies, Journal of Donghua University, Vol. 28, No. 2, Apr. (2002).
4. W. Leontief, Input-Output Economics. Oxford University Press, New York, (1966).
5. S. Xu and J. Lam, Robust stability for uncertain discrete singular systems with state delay, Asian J. Control, Vol. 5, 399–405, (2003).