@book{24354,
	author = {Hawking, Stephen and Penrose, Roger and Penrose, Roger ; jt. auth.},
	title = {The nature of space and time},
	publisher = {Princeton University Press},
	year = {1996},
	series = {Issac Newton Institute series of lectures},
	address = {Princeton},
	note = {"Purchased under NBHM grant for the year 2003-2004"}
}