@article{CAIA-JP-150401,
    title = {{Pattern-Based Survey and Categorization of Network Covert Channel Techniques}},
    author = {Steffen Wendzel and Sebastian Zander and Bernhard Fechner and Christian Herdin},
    month = {April},
    year = {2015},
    pages = {50:1--50:26},
    volume = {47},
    number = {3},
    journal = {ACM Computing Surveys},
    doi = {10.1145/2684195},
    url = {http://doi.acm.org/10.1145/2684195}
}