CABADA, Alberto, INFANTE, Gennaro and TOJO, Fernando Adrian. Nonzero solutions of perturbed Hammerstein integral equations with deviated arguments and applications. Topological Methods in Nonlinear Analysis. Online. 1 March 2016. Vol. 47, no. 1, pp. 265 - 287. [Accessed 22 July 2024]. DOI 10.12775/TMNA.2016.005.