@article {IOPORT.50376219,
    author       = {Verd\'u, Sergio and Shamai, Shlomo},
    title        = {Variable-rate channel capacity},
    year         = {2010},
    journal      = {IEEE Transactions on Information Theory},
    volume       = {56},
    number       = {6},
    pages        = {2651-2667},
    doi          = {10.1109/TIT.2010.2046220},
    identifier   = {50376219},
}