Adrian David Cheok Sze Lee Teo Lei Cao Le Nam Thang Capture the Flag: A Multiplayer Online Game for Phone Users. 222-223 2005 conf/iswc/2005 ISWC http://doi.ieeecomputersociety.org/10.1109/ISWC.2005.15 db/conf/iswc/iswc2005.html#CheokTCT05