@article{GDZPPN002318326,
title = {Integral Solution of Hilbert's Seeventeenth Problem.},
journal = {Mathematische Annalen},
volume = {243},
year = {1979},
pages = {33-40},
zbl = {0403.10008},
url = {http://dml.mathdoc.fr/item/GDZPPN002318326}
}
Stengle, Gilbert. Integral Solution of Hilbert's Seeventeenth Problem.. Mathematische Annalen, Tome 243 (1979) pp. 33-40. http://gdmltest.u-ga.fr/item/GDZPPN002318326/