@article {Markidis2007420,
	title = {Impairment-constraint-based routing in ultralong-haul optical networks with 2R regeneration},
	journal = {IEEE Photonics Technology Letters},
	volume = {19},
	number = {6},
	year = {2007},
	pages = {420-422},
	doi = {10.1109/LPT.2007.891653},
	url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-51849121345\&doi=10.1109\%2fLPT.2007.891653\&partnerID=40\&md5=387160fdff1181ce61a5dbff50c58c12},
	author = {Markidis, G. and Sygletos, S. and Tzanakaki, A. and Tomkos, I.}
}
