@article{MM2_1978__24_154542,
     author = {Willi Freeden},
     title = {Eine {Verallgemeinerung} der {Hardy-Landauschen} {Identit\"at.}},
     journal = {Manuscripta mathematica},
     pages = {205--216},
     publisher = {mathdoc},
     volume = {24},
     year = {1978},
     zbl = {0379.10030},
     url = {http://geodesic.mathdoc.fr/item/MM2_1978__24_154542/}
}