From the reviews: <p> The book under review is devoted to set-valued and fuzzy set-valued random variables which are generalizations of ordinary random variables a ] . the book is a useful reference for mathematicians who are working on set-valued or fuzzy set-valued random variables and related topics. Here one can find in one place results that are scattered throughout the literature. All the theorems are proven and the historical comments give the reader a wider perspective. (Osmo Kaleva, Mathematical Reviews, Issue 2005 b)