We present an existence theorem for at least one continuous solution for a coupled system of nonlinear functional (delay) integral equations of Urysohn-Stieltjes type.
"Existence of solution for a coupled system of Urysohn-Stieltjes functional integral equations." Tbilisi Math. J. 11 (1) 117 - 125, January 2018. https://doi.org/10.2478/tmj-2018-0008