@book{3997,
	author = {Unhelkar, Bhuvan.},
	title = {Practical Object Oriented Design },
	publisher = {Thomson Social Science Press},
	year = {2005.},
	address = {Austerlia},
	url = {http://www.amazon.com/exec/obidos/ASIN/0170122999/chopaconline-20}
}