We present some conditions for the existence and uniqueness of almost periodic solutions of th-order neutral differential equations with piecewise constant arguments of the form , here is the greatest integer function, and are nonzero constants, is a positive integer, and is almost periodic.
"Existence of Almost Periodic Solutions to th-Order Neutral Differential Equations with Piecewise Constant Arguments." Abstr. Appl. Anal. 2012 1 - 10, 2012. https://doi.org/10.1155/2012/186361