1. Upper and lower probabilities induced by a multivalued mapping;Dempster;Ann. Math. Statist.,1967
2. Modèles Mathématiques de l'Imprécis et de l'Incertain, en Vue d'Applications aux Techniques d'Aide à la Décision;Dubois,1983
3. Fuzzy Sets and Systems: Theory and Applications;Dubois,1980
4. Upper and lower possibilitistic expectations and some applications;Dubois,1982
5. On several representations of an uncertain body of evidence;Dubois,1982