%0 Journal Article %A Riečan, Beloslav %T The measure extension theorem for subadditive probability measures in orthomodular $\sigma$-continuous lattices %J Commentationes Mathematicae Universitatis Carolinae %D 1979 %P 309-316 %V 20 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1979__20_2_a8/ %G en %F CMUC_1979__20_2_a8