@article{MAN_1977__231_163058,
     author = {Udo Bauermann},
     title = {Balayage-Operatoren in der {Potentialtheorie.}},
     journal = {Mathematische Annalen},
     pages = {181--186},
     publisher = {mathdoc},
     volume = {231},
     year = {1977},
     zbl = {0351.31011},
     url = {http://geodesic.mathdoc.fr/item/MAN_1977__231_163058/}
}