@article{MZ_1955__63_169532,
     author = {Helmut Grunsky},
     title = {Eine funktionentheoretische {Integralformel.}},
     journal = {Mathematische Zeitschrift},
     pages = {320--323},
     publisher = {mathdoc},
     volume = {63},
     year = {1955},
     zbl = {0066.05501},
     url = {http://geodesic.mathdoc.fr/item/MZ_1955__63_169532/}
}