@book{188050,
	author = {Ross, Sheldon M.},
	title = {Introduction to probability models /},
	publisher = {Academic Press,},
	year = {c2003.},
	address = {San Diego, CA :},
	edition = {8th ed.},
	url = {http://www.loc.gov/catdir/description/els031/2002111025.html}
}