1. Ben-Yami , H. 2004 Logic & Natural Language: On Plural Reference and Its Semantic and Logical Significance , Aldershot: Ashgate http://philosophy.ceu.hu/publications/ben-yami/2004/15107
2. The Elusiveness of Sets;Black;The Review of Metaphysics,1971
3. Relations in Lewis's Framework without Atoms;Hazen;Analysis,1997