1. Foundations of linear Viscoelasticity;Coleman;Rev. Mod. Phys.,1961
2. Theory of Functional Differential Equations;Hale,1977
3. On a gradient-like integro-differential equation;Hale,1982
4. The asymptotic behavior of the solution of a Volterra equation;Levin,1963
5. On a nonlinear delay equation;Levin;J. Math. Anal. Appl.,1964