@book{779438,
	author = {THIAGAN and VISWANATHAN},
	title = {TELECOMMUNICATION SWICHING SYSTEMS & NETWORKS},
	publisher = {ASHOK K GHOSH PRENTIC HALLOF INDIA PVT LTD M-97 CONNAUGHT CIRCUS N.DELHI 100 001},
	year = {1992},
	address = {NEW DELHI}
}