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@article{PORMA_1987__44_2_115580, author = {Barker, George P. and Thompson, Alex}, title = {Cones of polynomials}, journal = {Portugaliae mathematica}, pages = {183--197}, publisher = {mathdoc}, volume = {44}, number = {2}, year = {1987}, mrnumber = {0911441}, zbl = {0631.52003}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1987__44_2_115580/} }
Barker, George P.; Thompson, Alex. Cones of polynomials. Portugaliae mathematica, Tome 44 (1987) no. 2, pp. 183-197. http://geodesic.mathdoc.fr/item/PORMA_1987__44_2_115580/