1. Complex Analysis. International Series in Pure and Applied Mathematics;Ahlfors,1979
2. Analysis of a system of linear delay differential equations;Asl;ASME J. Dyn. Syst. Meas. Contr.,2003
3. Balancing the inverted pendulum using position feedback;Atay;Appl. Math. Lett.,1999
4. Condition for stabilizability of time-delay systems with real-rooted plant;Balogh;Int. J. Robust Nonlin. Contr.,2022
5. Mikhailov stability criterion for time-delayed systems;Barker,1979