Continous, piecewise-polynomial functions which solve Hilbert's 17th problem.
Delzell, Charles N.
Journal für die reine und angewandte Mathematik, Tome 435 (1993), p. 157-174 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1993-01-01
EUDML-ID : urn:eudml:doc:153537 
@article{GDZPPN002210754,
     title = {Continous, piecewise-polynomial functions which solve Hilbert's 17th problem.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     volume = {435},
     year = {1993},
     pages = {157-174},
     zbl = {0774.12003},
     url = {http://dml.mathdoc.fr/item/GDZPPN002210754}
}

Delzell, Charles N. Continous, piecewise-polynomial functions which solve Hilbert's 17th problem.. Journal für die reine und angewandte Mathematik, Tome 435 (1993) pp. 157-174. http://gdmltest.u-ga.fr/item/GDZPPN002210754/