%0 Journal Article %A Andreas Defant %A Mieczysław Mastyło %T Factorization and extension of positive homogeneous polynomials %J Studia Mathematica %D 2014 %P 87-99 %V 221 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4064/sm221-1-5/ %R 10.4064/sm221-1-5 %G en %F 10_4064_sm221_1_5