1. On distribution function of probability sets and its applications in decision making;Czogala;Fuzzy Sets and Systems,1983
2. Probability Sets in Decision Making and Control;Czogala,1984
3. On the reliability of the shuttle;Feynman,1989
4. Fuzzy random variables and their probability characters;Juning;J. Harbin Architectural and Civil Eng. Institute,1989
5. Fuzzy random variables, I, II;Kwakernaak;Inform. Sci.,1978