@article{MAN_1973__200_162343,
     author = {H.O. Fattorini},
     title = {The {Underdetermined} {Cauchy} {Problem} in {Banach} {Spaces.}},
     journal = {Mathematische Annalen},
     pages = {103--112},
     publisher = {mathdoc},
     volume = {200},
     year = {1973},
     zbl = {0231.34052},
     url = {http://geodesic.mathdoc.fr/item/MAN_1973__200_162343/}
}