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@article{MAN_1979__246_163326, author = {Gilbert Stengle}, title = {Integral {Solution} of {Hilbert's} {Seeventeenth} {Problem.}}, journal = {Mathematische Annalen}, pages = {33--40}, publisher = {mathdoc}, volume = {246}, year = {1979}, zbl = {0403.10008}, url = {http://geodesic.mathdoc.fr/item/MAN_1979__246_163326/} }
Gilbert Stengle. Integral Solution of Hilbert's Seeventeenth Problem.. Mathematische Annalen, Tome 246 (1979), pp. 33-40. http://geodesic.mathdoc.fr/item/MAN_1979__246_163326/