References
- Jiang , C.-l. 1987 . Sufficient condition for the asymptotical stability of interval matrices . International Journal of Control , 46 : 1803 – 1810 .
- Shi , Z.-C and Gao , W.-B. 1986 . A necessary and sufficient condition for the positive-definiteness of interval symmetric matrices . International Journal of Control , 43 : 325 – 328 .