@article{oai:u-ryukyu.repo.nii.ac.jp:02003819,
 author = {山下, 勝己 and 山川, 敦 and 宮城, 隼夫 and Yamashita, Katsumi and Yamakawa, Atsushi and Miyagi, Hayao},
 issue = {42},
 journal = {琉球大学工学部紀要},
 month = {Sep},
 note = {The robustness of a nonlinear feedback system subject to plant variations is studied through the direct method of Lyapunov. Robust stability results developed in this paper give bounds of parameter deviations of the system, which may be tolerated without losing stability. The proposed method is illustrated by using an example., 紀要論文},
 pages = {79--84},
 title = {非線形フィードバックシステムのロバスト安定性},
 year = {1991}
}