@article{Shen2012Spectrum,
    author = {Gangxiang Shen and Moshe Zukerman},
    title = {Spectrum-Efficient and Agile {CO-OFDM} Optical Transport Networks: Architecture, Design, and Operation},
    journal = {IEEE Communications Magazine},
    volume = {50},
    number = {5},
    pages = {82-89},
    month = {May},
    year = {2012},
    abstract = {}
}