@article {Borovoi:2000:0021-8693:804,
	author = "Borovoi M. and Kunyavskii B.",
	title = "Formulas for the Unramified Brauer Group of a Principal Homogeneous Space of a Linear Algebraic Group",
	journal = "Journal of Algebra",
	volume = "225",
	number = "2",
	year = "2000",
	abstract = "",
	pages = "804-821",
	url = "http://www.ingentaconnect.com/content/els/00218693/2000/00000225/00000002/art98153",
	doi = "doi:10.1006/jabr.1999.8153	",
	keyword = "linear algebraic group; principal homogeneous spac"
}