@article {22497,
	title = {Nonlinear penalty suppression in cascades of optical add-drop multiplexers},
	journal = {IEEE Photonics Technology LettersIEEE Photonics Technology Letters},
	volume = {17},
	number = {12},
	year = {2005},
	month = {12/2005},
	pages = {2769-2771},
	isbn = {1041-1135},
	url = {http://ieeexplore.ieee.org/document/1542218/},
	author = {Tzanakaki, A. and Zacharopoulos, I. and Parcharidou, D. and Tomkos, I.}
}
