1. Halanay, A.: Inégalités différentielles à retardement et une application à un problème de la théorie de la stabilité des systèmes à retardement. Com. Acad. R. P. Romîne 11, 1305–1309 (1961)
2. Halanay, A.: Differential Equations: Stability, Oscillations, Time Lags. Academic Press, New York (1966)
3. Baker, C.T.H.: Development and application of Halanay-type theory: evolutionary differential and difference equations with time lag. J. Comput. Appl. Math. 234, 2663–2682 (2010)
4. Baker, C.T.H., Tang, A.: Generalized Halanay inequalities for Volterra functional differential equations and discretized versions. In: Corduneanu, C., Sandberg, I.W. (eds.) Volterra Equations and Applications, pp. 39–55. Gordon & Breach, Amsterdam (2000)
5. El-Deeb, A.A., Baleanu, D.: Some new dynamic Gronwall-Bellman-Pachpatte type inequalities with delay on time scales and certain applications. J. Inequal. Appl. 2022, 45 (2022)