@article{10_1007_s10587_011_0040_z,
     author = {Hern\'andez, Eduardo M. and O'Regan, Donal},
     title = {Existence of solutions for abstract neutral integro-differential equations with unbounded delay},
     journal = {Czechoslovak Mathematical Journal},
     pages = {691--706},
     publisher = {mathdoc},
     volume = {61},
     number = {3},
     year = {2011},
     doi = {10.1007/s10587-011-0040-z},
     mrnumber = {2853084},
     zbl = {1249.34217},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10587-011-0040-z/}
}