Miller, James D. (6 September 2011). "The Singleton Solution". hplusmagazine.com. Retrieved 3 February 2016.
nickbostrom.com
Nick Bostrom (2006). "What is a Singleton?". Linguistic and Philosophical Investigations5(2): 48-54.
Nick Bostrom (2006). "What is a Singleton?". Linguistic and Philosophical Investigations5(2): 48-54.
Nick Bostrom (2004). "The Future of Human Evolution". Death and Anti-Death: Two Hundred Years After Kant, Fifty Years After Turing, ed. Charles Tandy (Ria University Press: Palo Alto, California): 339-371.