@book{403,
	author = {Roddy , Dennis. and Coolen, John.},
	title = {Electronic Communications  /},
	publisher = {Pearson educationl.,},
	year = {2011.},
	address = {NewDelhi},
	edition = {4th ed.},
	url = {http://10.10.170.122:8080/browse/book/24964}
}