@book{31728,
	author = {Haberman, Steven, and Pitacco, Ermanno.},
	title = {Actuarial models for disability insurance /},
	publisher = {Chapman & Hall,},
	year = {c1999.},
	address = {Boca Raton, FL :},
	url = {http://www.loc.gov/catdir/enhancements/fy0744/98043262-d.html}
}