TY  - JOUR
AU  - Marshall, M.
TI  - Approximating Positive Polynomials Using Sums of Squares
JO  - Canadian mathematical bulletin
PY  - 2003
SP  - 400
EP  - 418
VL  - 46
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-2003-041-9/
DO  - 10.4153/CMB-2003-041-9
ID  - 10_4153_CMB_2003_041_9
ER  -