1. The Telephone System as a Public Good: Static and Dynamic Aspects
2. A Theory of Interdependent Demand for a Communications Service;Jeffrey Rohlfs;THE BELL JOURNAL OF ECONOMICS AND MANAGEMENT SCIENCE,1974
3. It's not just that code is non-rival; it's that code in particular, and (at least some) knowledge in general, is, as Weber calls it, 'anti-rival'. I am not only not harmed when you share an anti-rival good: I benefit;Lawrence Lessig;Open Code and Open Societies: Values of Internet Governance,1999