%0 Journal Article %A Robert J. Weaver %T Admissible operations on sample spaces over the free orthogonality monoid %J Colloquium Mathematicum %D 1972 %P 319-324 %V 25 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-25-2-319-324/ %R 10.4064/cm-25-2-319-324 %G en %F 10_4064_cm_25_2_319_324