1. Belinfante, A., 1993, Telephone subscribership in the United States, Industry Analysis Division, Common Carrier Bureau, Federal Communications Commission.
2. Cherry, B., 1997. Universal Service Obligations: Comparison of the United States with the European Union. Manuscript, Northwestern University.
3. Evaluating the effects of new telephone tariffs on residential users’ demand and welfare: a model for Italy;Colombino;Information Economics and Policy,1998
4. Universal access to online services: an examination of the issue;Compaine;Telecommunications Policy,1997
5. Universal service in post-divestiture AT&T;Dordick;Telecommunications Policy,1991