[6]
Business Models and System Architectures of Virtual Communities: From a Sociological Phenomenon to Peer-to-Peer Architectures[J] . Ulrike Lechner,Johannes Hummel.International Journal of Electronic Commerce . 2002 (3)
[6]
Business Models and System Architectures of Virtual Communities: From a Sociological Phenomenon to Peer-to-Peer Architectures[J] . Ulrike Lechner,Johannes Hummel.International Journal of Electronic Commerce . 2002 (3)