%0 Journal Article %A E. de Amo %A M. Díaz Carrillo %T A Radon–Nikodym derivative for positive linear functionals %J Studia Mathematica %D 2009 %P 1-14 %V 192 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4064/sm192-1-1/ %R 10.4064/sm192-1-1 %G en %F 10_4064_sm192_1_1