This paper contains a theorem on the existence of monotonic and integrable solutions of a functional-integral equation. The proof of that theorem is based on the technique associated with the notion of a measure of weak noncompactness.
@article{urn:eudml:doc:43269, title = {Integrable solutions of a functional-integral equation.}, journal = {Revista Matem\'atica de la Universidad Complutense de Madrid}, volume = {2}, year = {1989}, pages = {31-38}, zbl = {0679.45003}, mrnumber = {MR1012104}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:43269} }
Banas, Józef; Knap, Zygmunt. Integrable solutions of a functional-integral equation.. Revista Matemática de la Universidad Complutense de Madrid, Tome 2 (1989) pp. 31-38. http://gdmltest.u-ga.fr/item/urn:eudml:doc:43269/