@book{113,
	author = {"Schach,Stephen R"},
	title = {Classical and object-oriented software engineering},
	publisher = {IRWIN},
	address = {London},
	edition = {3rd},
	url = {https://libgen.is/book/index.php?md5=20A0A93CEA3A4EAD338F2DF06F00228C}
}