@book{13012,
	author = {Horstmann, Cay},
	title = {Object oriented design and patterns},
	publisher = {John Wiley & Sons Publisher},
	year = {2013},
	address = {New Delhi},
	edition = {2nd},
	url = {https://libgen.is/book/index.php?md5=7901A083A8C7B02F3559C06B94A2D1A6}
}