@article{02163619, title = {Perturbed Fredholm boundary value problems for delay differential systems.}, journal = {Abstract and Applied Analysis}, volume = {2003}, year = {2003}, pages = {843-864}, doi = {10.1155/S1085337503304026}, zbl = {1077.34069}, language = {en}, url = {http://dml.mathdoc.fr/item/02163619} }
Boichuk, Alexander A.; Grammatikopoulos, Myron K. Perturbed Fredholm boundary value problems for delay differential systems.. Abstract and Applied Analysis, Tome 2003 (2003) pp. 843-864. doi : 10.1155/S1085337503304026. http://gdmltest.u-ga.fr/item/02163619/