Yookun Cho Roger L. Wainwright Hisham Haddad Sung Y. Shin Yong Wan Koo Proceedings of the 2007 ACM Symposium on Applied Computing (SAC), Seoul, Korea, March 11-15, 2007 SAC ACM 1-59593-480-4 2007 https://doi.org/10.1145/1244002 https://www.wikidata.org/entity/Q59601037 db/conf/sac/sac2007.html