@book{6012,
	author = {Rosen , Kenneth H. and Michaels, John G.},
	title = {Discrete mathematics and its Applications /},
	publisher = {McGraw-Hill,},
	year = {c2025.},
	address = {New York :},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/description/mh023/91061089.html}
}