@article {Olson:1 March 2003:0031-8205:328,
	author = "Olson E.T.",
	title = "Was Jekyll Hyde?",
	journal = "Philosophy and Phenomenological Research",
	volume = "66",
	year = "1 March 2003",
	abstract = "Many philosophers say that two or more people or thinking beings could share a single human being in a split-personality case, if only the personalities were sufficiently independent and individually well integrated. I argue that this view is incompatible with our being material things, and conclude that there could never be two or more people in a split-personality case. This refutes the view, almost universally held, that facts about mental unity and disunity determine how many people there are. I suggest that the number of human people is simply the number of appropriately endowed human animals.",
	pages = "328-348(21)",
	url = "http://www.ingentaconnect.com/content/ips/ppr/2003/00000066/00000002/art00004"
}