1. Arp R, Smith B, Spear A (2015) Building ontologies with Basic Formal Ontology. MIT Press, Cambridge, MA
2. Bittner T, Smith B (2001) Granular partitions and vagueness. In: Welty C, Smith B (eds) Formal ontology and information systems. ACM Press, New York, pp 309–321
3. Bittner T, Smith B (2003a) A unified theory of truth and reference. Log Anal 169–170:49–93
4. Bittner T, Smith B (2003b) A theory of granular partitions. In: Duckham M, Goodchild MF, Worboys MF (eds) Foundations of geographic information science. Taylor & Francis Books, London, pp 117–151
5. Brentano F (1988) Philosophical investigations on space, time and the continuum. English translation by B. Smith. Croom Helm, London and Sydney