%0 Journal Article %A J. Janas %T Semi-spectral integrals and related mappings %J Studia Mathematica %D 1973 %P 301-313 %V 46 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-46-3-301-313/ %R 10.4064/sm-46-3-301-313 %G en %F 10_4064_sm_46_3_301_313