@book{9031,
	author = {Epp, Susanna S.},
	title = {Discrete Mathematics with application},
	publisher = {PWS Publishing },
	address = {Boston},
	edition = {2nd},
	url = {https://libgen.rs/book/index.php?md5=E1AE9ADAC5F04BFCF45826428B68AA78}
}