@book{589053,
	author = {Nilson, Arthur H.},
	title = {Design of prestressed concrete /},
	publisher = {Wiley,},
	year = {c1987.},
	address = {New York :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/description/wiley0310/86026792.html}
}