@article{MZ_1943__49_169017,
     author = {K. Schr\"oder},
     title = {\"Uber die {Ableitungen} biharmonischer {Funktionen} am {Rande}},
     journal = {Mathematische Zeitschrift},
     pages = {110--147},
     publisher = {mathdoc},
     volume = {49},
     year = {1943},
     zbl = {0028.06801},
     url = {http://geodesic.mathdoc.fr/item/MZ_1943__49_169017/}
}