%0 Journal Article %A M. Putinar %T Functional calculus and the Gelfand transformation %J Studia Mathematica %D 1984 %P 83-86 %V 79 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-79-1-83-86/ %R 10.4064/sm-79-1-83-86 %G en %F 10_4064_sm_79_1_83_86