@article{MZ_1972__128_171789,
     author = {Stephan Ruscheweyh},
     title = {\"Uber die {Faltung} schlichter {Funktionen.}},
     journal = {Mathematische Zeitschrift},
     pages = {85--92},
     publisher = {mathdoc},
     volume = {128},
     year = {1972},
     zbl = {0229.30018},
     url = {http://geodesic.mathdoc.fr/item/MZ_1972__128_171789/}
}