@article{MZ_1975__142_172178,
     author = {Stephan Ruscheweyh},
     title = {Nichtlineare {Extremalprobleme} f\"ur holomorphe {Stieltjesintegrale.}},
     journal = {Mathematische Zeitschrift},
     pages = {19--24},
     publisher = {mathdoc},
     volume = {142},
     year = {1975},
     zbl = {0292.30013},
     url = {http://geodesic.mathdoc.fr/item/MZ_1975__142_172178/}
}