1. Armstrong DM (1989) Universals: an opinionated introduction. Westview Press, Boulder, pp 76–77; cf. pp 75–82
2. Garcia R (2009) Nominalist constituent ontologies: a development and critique. Ph.D. Dissertation, University of Notre Dame
3. Gould P (2010) A defense of platonic theism. Ph.D. Dissertation, Purdue University
4. Husserl E (1970) Logical investigations (trans 2nd edn: Findlay JN) Routledge and Kegan Paul, London
5. Husserl E (1982) Ideas pertaining to a pure phenomenology and to a phenomonological philosophy. First book: general introduction to a pure phenomenology (trans: F Kersten Nijhoff). The Hague