doi dblp Unveiling a Socio-Economic System in a Virtual World: A Case Study of an MMORPG Selin Chun | Daejin Choi | Jinyoung Han | Huy Kang Kim | Taekyoung Kwon Proceedings of the 2018 World Wide Web Conference on World Wide Web, WWW 2018, Lyon, France, April 23-27, 2018