@article{MZ_1964__86_170332,
     author = {Friedrich Stummel},
     title = {Zur {Konvergenz} des {Balayage-Verfahrens} in {Hilbertschen} {R\"aumen.}},
     journal = {Mathematische Zeitschrift},
     pages = {136--144},
     publisher = {mathdoc},
     volume = {86},
     year = {1964},
     zbl = {0127.06703},
     url = {http://geodesic.mathdoc.fr/item/MZ_1964__86_170332/}
}