1. Stability in Competition;Harold Hotelling;Economic Journal,1929
2. Network Externalities, Competition, and Compatibility;Michael L Katz;The American Economic Review,1985
3. Making Real Money in Virtual Worlds: MMORPGs and Emerging Business Opportunities, Challenges and Ethical Implications in Metaverses;Savvass Papagiannidis;Technological Forecasting and Social Change,2008
4. A Theory of Interdependent Demand for a Communications Service;Jeffrey Rohlfs;The Bell Journal of Economics and Management Science,1974