@article{MZ_1934__38_168531,
     author = {E. M. Wright},
     title = {Proportionality conditions in {Waring's} problem},
     journal = {Mathematische Zeitschrift},
     pages = {730--746},
     publisher = {mathdoc},
     volume = {38},
     year = {1934},
     zbl = {0009.15301},
     url = {http://geodesic.mathdoc.fr/item/MZ_1934__38_168531/}
}