@article{MAN_1980__248_163384,
     author = {Harold P. Boas},
     title = {A {Geometrie} {Characterization} of the {Ball} and the {Bochner-Martinelli} {Kernel.}},
     journal = {Mathematische Annalen},
     pages = {275--278},
     year = {1980},
     volume = {248},
     zbl = {0414.32002},
     url = {http://geodesic.mathdoc.fr/item/MAN_1980__248_163384/}
}