1. Adams, R. M. (1981). Actualism and thisness. Synthese, 49, 3–41.
2. Armstrong, D. M. (1989). Universals. London: Westview Press.
3. Bricker, P. (1993). The fabric of space: Intrinsic vs. extrinsic distance relations. In P. French, T. Uehling, & H. Wettstein (Eds.), Midwest studies in philosophy 18 (pp. 271–294). Notre Dame: University of Notre Dame Press.
4. Campbell, Keith. (1990). Abstract particulars. Oxford: Blackwell.
5. Caplan, Ben. (2011). Ontological superpluralism. Philosophical Perspectives, 25, 79–114.