%0 Journal Article %A Marshall, M. %T Representations of Non-Negative Polynomials, Degree Bounds and Applications to Optimization %J Canadian journal of mathematics %D 2009 %P 205-221 %V 61 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-2009-010-4/ %R 10.4153/CJM-2009-010-4 %F 10_4153_CJM_2009_010_4