Choi, Woo Yong; Chung, Yongwha; Park, Jin-Won; Hong, Dowon
ArticleIssue Date2011CitationKSII TRANSACTIONS ON INTERNET AND INFORMATION SYSTEMS, v.5, no.11, pp.2221 - 2234PublisherKSII-KOR SOC INTERNET INFORMATION
ArticleIssue Date2011CitationKSII TRANSACTIONS ON INTERNET AND INFORMATION SYSTEMS, v.5, no.10, pp.1783 - 1798PublisherKSII-KOR SOC INTERNET INFORMATION