PageHeader : $\mathrm{F}\mathrm{u}\mathrm{n}\mathrm{k}\mathrm{C}\overline{\mathrm{i}}\mathrm{a}\mathrm{l}\mathrm{a}\mathrm{j}$ Ekvacioj, 19 (1976) 65-77 Title : Linear Functional Differential Equations Title : with $L^{2}$ Initial Functions AuthorInfo : By AuthorInfo : G. F. WEBB AuthorInfo : (Vanderbilt University, U.S.A. and Universita di Roma, Italia) section : 1. Introduction. section : 2. Properties of the infinitesimal generator. section : 3. Decomposition of X with the spectrum of?A. section : 4. The decomposition for the nonhomogeneous equation. section : 5. An example. section : References