@book{11416,
	author = {Gupta, Prakash},
	title = {Data communications and computer networks},
	publisher = {Prentice Hall },
	year = {2006},
	address = {New Delhi},
	url = {https://libgen.is/book/index.php?md5=7F9275F524446A8B444F4F1DF4A4421C}
}