@article{MZ_1936__41_168693,
     author = {L. Hua},
     title = {A {Problem} on the additive {Theory} of {Number} of several variables},
     journal = {Mathematische Zeitschrift},
     pages = {708--712},
     publisher = {mathdoc},
     volume = {41},
     year = {1936},
     zbl = {62.0150.02},
     url = {http://geodesic.mathdoc.fr/item/MZ_1936__41_168693/}
}