@manual{XBGF-manual,
	title = "{XBGF Reference Manual: BGF Transformation Operator Suite}",
	author = "Vadim Zaytsev",
	organization = "{Universit{\"a}t Koblenz-Landau (SLPS)}",
	edition = "1.0",
	month = aug,
	year = 2009,
	url = "http://slps.github.io/xbgf",
}