@book{53989,
	author = {XU, Jack},
	title = {Practical C# charts and graphics :},
	publisher = {UniCAD Publishing,},
	year = {2007.},
	series = {C# Application Series},
	address = {Phoenix :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=53989}
}