@article{1102650846, author = {Zeng, Guangxin}, title = {Homogeneous Stellens\"atze in semialgebraic geometry.}, journal = {Pacific J. Math.}, volume = {140}, number = {2}, year = {1989}, pages = { 103-122}, language = {en}, url = {http://dml.mathdoc.fr/item/1102650846} }
Zeng, Guangxin. Homogeneous Stellensätze in semialgebraic geometry.. Pacific J. Math., Tome 140 (1989) no. 2, pp. 103-122. http://gdmltest.u-ga.fr/item/1102650846/