@book{28609,
	author = {Tucker, Alan},
	title = {Applied combinatorics},
	publisher = {John Wiley & Sons Publisher},
	year = {1980},
	address = {New York},
	edition = {3rd},
	url = {https://www.libgen.is/book/index.php?md5=36D80F38E2D5FC539002D61E995CAFB2}
}