@book{2774,
	author = {Armstrong, P.},
	title = {Diagnostic Imaging },
	publisher = {bvlackwell Scientific Publication ,},
	year = {1981 .},
	address = {London :},
	edition = {3rd ed.},
	url = {https://books.google.com.pk/books?id=NomwQwAACAAJ&dq=063203095X&hl=en&sa=X&redir_esc=y}
}