1. Stability of nonlinear Volterra integro-differential equations with Caputo fractional derivative and bounded delays;Hristova;Electron J Differential Equations,2019
2. Introduction To Functional-Differential Equations, Applied Mathematical Sciences;Hale,1993
3. On stability of systems with retardation;Razumihin;Prikl Mat Meh,1956
4. The application of Lyapunov’s method to problems in the stability of systems with delay;Razumihin;Avtomat I Telemeh,1960
5. Razumikhin and Krasovskii stability theorems for time-varying time-delay systems;Zhou;Automatica J IFAC,2016