@article {IOPORT.50039218,
    author       = {Wu, Jingzheng and Wang, Yongji and Ding, Liping and Liao, Xiaofeng},
    title        = {Improving performance of network covert timing channel through Huffman coding},
    year         = {2012},
    journal      = {Mathematical and Computer Modelling},
    volume       = {55},
    number       = {1-2},
    pages        = {69-79},
    doi          = {10.1016/j.mcm.2011.01.051},
    identifier   = {50039218},
}