Hong Li and Shou-ming Zhong and Hou-biao Li, Stability of Interval Fractional-order Systems with Order 0 < α < 1. journal = {International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology. August 2012, vol. 68(8). 987 - 991[viewed 16 February 2019]. Available from: http://waset.org/publications/1954.