@article {Chang:1 January 1999:0378-5173:147,
	author = "Chang H.-C.",
	author = "Li L.C.",
	author = "Marsh K.C.",
	author = "Tian Y.",
	author = "Grischeau D.",
	title = "Parenteral sustained-release dosage forms of butorphanol for dogs",
	journal = "International Journal of Pharmaceutics",
	volume = "176",
	year = "1 January 1999",
	abstract = "",
	pages = "147-156(10)",
	url = "http://www.ingentaconnect.com/content/els/03785173/1999/00000176/00000002/art00295"
	doi = "doi:10.1016/S0378-5173(98)00295-6"
}