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@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/} }
L. Hua. A Problem on the additive Theory of Number of several variables. Mathematische Zeitschrift, Tome 41 (1936), pp. 708-712. http://geodesic.mathdoc.fr/item/MZ_1936__41_168693/