%0 Journal Article %A Montanaro, A. %A Bressan, A. %T Contributions to foundations of probability calculus on the basis of the modal logical calculus $MC^\nu $ or $MC^\nu _\ast $ %J Rendiconti del Seminario Matematico della Università di Padova %D 1981 %P 109-126 %V 64 %I Seminario Matematico of the University of Padua %U http://www.numdam.org/item/RSMUP_1981__64__109_0/ %G en %F RSMUP_1981__64__109_0