@book{48479,
	author = {Kembhavi, A. K and Narlikar, Jayant Vishnu},
	title = {Quasars and active galactic nuclei : an introduction},
	publisher = {Cambridge University Press},
	year = {1999},
	address = {Cambridge},
	note = {Includes bibliographical references (p. [426]-450) and indexes}
}