@article{MAN_1979__244_163290,
     author = {Wolfgang Walter},
     title = {Existence {Theorems} for a {Two-Point} {Boundary} {Value} {Problem} in {Banach} {Space.}},
     journal = {Mathematische Annalen},
     pages = {55--64},
     publisher = {mathdoc},
     volume = {244},
     year = {1979},
     zbl = {0409.34022},
     url = {http://geodesic.mathdoc.fr/item/MAN_1979__244_163290/}
}