@article {Levin:May 1999:1386-4181:179,
	author = "Levin E.J.",
	author = "Wright R.E.",
	title = "Explaining the intra-day variation in the bid-ask spread in competitive dealership markets - A research note",
	journal = "Journal of Financial Markets",
	volume = "2",
	year = "May 1999",
	abstract = "",
	pages = "179-191(13)",
	url = "http://www.ingentaconnect.com/content/els/13864181/1999/00000002/00000002/art00009"
	doi = "doi:10.1016/S1386-4181(98)00009-3"
}