A New Circle Criterion for the Stability of Nonlinear Control System
非線形制御系の安定判別のための新円板定理

M. KUWAHARA, M. HATADA
1970 The Journal of the Institute of Electrical Engineers of Japan  
doi:10.11526/ieejjournal1888.90.1985 fatcat:wg4tsbbtb5clzbj3pbzdhuib2u