1. Competition for 800 service;Kaserman;Telecommunications Policy,1991
2. Post divestiture long-distance competition in the United States;Taylor;American Economic Review,1993
3. Restructuring the Korean telecommunications market;Cho;Telecommunications Policy,1965
4. Statistics on International Telecommunication Service Market;KT international service division,1994
5. Performance in the US telecommunication services industry;Majumdar;Telecommunications Policy,1992