%0 Journal Article %A Kuhlmann, Salma %A Putinar, Mihai %T Positive polynomials on fibre products %J Comptes Rendus. Mathématique %D 2007 %P 681-684 %V 344 %N 11 %I Elsevier %U http://www.numdam.org/articles/10.1016/j.crma.2007.04.009/ %R 10.1016/j.crma.2007.04.009 %G en %F CRMATH_2007__344_11_681_0