@article{CAIA-JP-050200A,
    title = {{Evaluating Internet Pricing Schemes - A Three Dimensional Visual Model}},
    author = {Thuy Nguyen and Grenville Armitage},
    month = {February},
    year = {2005},
    pages = {64-74},
    volume = {27},
    number = {1},
    journal = {ETRI Journal},
    url = {http://etrij.etri.re.kr/Cyber/servlet/BrowseAbstract?paperid=RP0405-0061}
}