@book{1918,
	author = {Agrawal, Govind P.},
	title = {Fiber optic communication systems},
	publisher = {John Wiley & Sons Publisher},
	address = {New york},
	edition = {3rd},
	url = {https://libgen.is/book/index.php?md5=3AE934E275096A585E5FC7D0F185A6B5}
}