Stability of Liénard equation
A method for constructing a new type of Lyapunov fixed sign function was developed in solving problems of stability, asymptotic stability (local and global) and instability. New stability results of some types of second order nonlinear differential equations of the Liénard type are established.
Lyapunov's constant-sign function, Liénard equation
scientific article; zbMATH DE number 7000292
scientific article