1. Functional analysis and semi-groups;Hille,1957
2. Asymptotic behavior of the solutions of differential-difference equations;Hale,1961
3. Functional-differential equations with parameters;Hale;Contrib. Diff. Eqs.,1963
4. A class of functional-differential equations;Hale;Contrib. Diff. Eqs.,1963
5. Linear functional-differential equations with constant coefficients;Hale;Contrib. Diff. Eqs.,1964