Summary
In the article, we derive an existence theorem for a Bolza problem described by a nonlinear integro‐differential system of Volterra type. We use an approach based on the lower closure theorem for orientor fields due to Cesari and measurable selection theorem of Fillipov type due to Rockafellar. Paper is a continuation of [D. Idczak, S. Walczak, Necessary optimality conditions for an integro‐differential Bolza problem via Dubovitskii‐Miljutin method, DCDS‐B 24 (5) (2019), 2281‐2292; DOI:10.3934/dcdsb.2019095].