@article{MAN_1957__133_160533,
     author = {Bruns. G.},
     title = {Durchschnittsdarstellungen von {Filtern.}},
     journal = {Mathematische Annalen},
     pages = {26--38},
     publisher = {mathdoc},
     volume = {133},
     year = {1957},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1957__133_160533/}
}