Taejoong Chung, Jinyoung Han, Daejin Choi, Ted Taekyoung Kwon, Huy Kang Kim and Yanghee Choi,
‘Unveiling Group Activities in Online Social Games: A Socio-Economic Analysis‘,
accepted in World Wide Web (WWW) 2014. (acceptance ratio = 84/650 = 12.9%)