Comments on "Adaptive Fuzzy H∞ Stabilization for Strict-Feedback Canonical Nonlinear Systems Via Backstepping and Small-Gain Approach"

"For original paper see Y. S. Yang, C. J. Zhou, ibid., vol. 13, no. 1, p. 104-114, (2005)". In this note, we point out some mistakes in a 2005 paper by Yang and Zhou.