@book{2806,
	author = {Khan, Faiz M.},
	title = {The physics of radiation therapy },
	publisher = {Williams & Wilkins ,},
	year = {1994 .},
	address = {Baltimore :},
	edition = {2nd ed.},
	url = {https://books.google.com.pk/books?id=iUAQAQAAMAAJ&q=0683045024&dq=0683045024&hl=en&sa=X&redir_esc=y}
}