@article{MZ_1930__32_168254,
     author = {E., Landau},
     title = {Zum {Waringschen} {Problem.} {Dritte} {Abhandlung}},
     journal = {Mathematische Zeitschrift},
     pages = {699--702},
     publisher = {mathdoc},
     volume = {32},
     year = {1930},
     zbl = {56.0173.03},
     url = {http://geodesic.mathdoc.fr/item/MZ_1930__32_168254/}
}