@article{MZ_1962__80_170117,
     author = {Raymond M. Redheffer},
     title = {\"Uber eine beste {Ungleichung} zwischen den {Normen} von  f, f', f''.},
     journal = {Mathematische Zeitschrift},
     pages = {390--397},
     publisher = {mathdoc},
     volume = {80},
     year = {1962},
     zbl = {0121.05601},
     url = {http://geodesic.mathdoc.fr/item/MZ_1962__80_170117/}
}