Estimates for solutions of retarded equations with variable coefficients

In this work, we study retarded-type differential-difference equations with variable coefficients. Using the adjoint equation, we obtain an integral representation of the solution. A number of results on the asymptotic behavior of the solutions is proved on the basis of this representation. __________ Translated from Fundamentalnaya i Prikladnaya Matematika, Vol. 12, No. 5, pp. 83–93, 2006.