The paper deals with a linear system of differential equations of the form$$\frac{dX(t)}{dt} = A X(t) + \mu\sum_{k=1}^{n}A_k X(t+\tau_k)$$with constant coefficients, a small parameter and complex deviating argument.Sufficient conditions for factorizing of this system are presented. This conditions are obtained by construction of an integral manifold of solutions to the considered system.
@article{211, title = {Conditions for factorization of linear differential-difference equations}, journal = {Tatra Mountains Mathematical Publications}, volume = {55}, year = {2013}, doi = {10.2478/tatra.v54i0.211}, language = {EN}, url = {http://dml.mathdoc.fr/item/211} }
Janglajew, Klara R.; Valeev, Kim Galjamovich. Conditions for factorization of linear differential-difference equations. Tatra Mountains Mathematical Publications, Tome 55 (2013) . doi : 10.2478/tatra.v54i0.211. http://gdmltest.u-ga.fr/item/211/