@book{27269,
	author = {Stevens, Perdita},
	title = {Using UML},
	publisher = {Pearson Education Publisher},
	year = {2001},
	address = {New Delhi},
	edition = {LPE},
	url = {https://libgen.is/book/index.php?md5=2A2880E8F1823A38F07E112352A4C4E5}
}