1. CTC technology & energy: Dark fiber lease considerations. Technical report (2012). www.ctcnet.us/DarkFiberLease.pdf. Accessed 29 Aug 2019
2. Becker, P.M., Olsson, A.A., Simpson, J.R.: Erbium-Doped Fiber Amplifiers: Fundamentals and Technology. Elsevier, Amsterdam (1999)
3. Cai, A., Shen, G., Peng, L., Zukerman, M.: Novel node-arc model and multiiteration heuristics for static routing and spectrum assignment in elastic optical networks. J. Lightwave Technol. 31(21), 3402–3413 (2013). http://jlt.osa.org/abstract.cfm?URI=jlt-31-21-3402
4. Dallaglio, M., Giorgetti, A., Sambo, N., Velasco, L., Castoldi, P.: Routing, spectrum, and transponder assignment in elastic optical networks. J. Lightwave Technol. 33(22), 4648–4658 (2015). https://doi.org/10.1109/JLT.2015.2477898
5. Desurvire, E., Bayart, D., Desthieux, B., Bigo, S.: Erbium-Doped Fiber Amplifiers: Device and System Developments. Wiley, Hoboken (2002)